SIERRA MONITOR CORP /CA/
S-8, 1996-12-19
MEASURING & CONTROLLING DEVICES, NEC
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    As filed with the Securities and Exchange Commission on December 20, 1996
                                              Registration No. 333-_____________

================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                -----------------

                                    Form S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                -----------------

                           SIERRA MONITOR CORPORATION
             (Exact name of registrant as specified in its charter)

       California                                         95-2481914
(State of Incorporation)                       (IRS Employer Identification No.)

                                1991 Tarob Court
                           Milpitas, California 95035
                    (Address of Principal Executive Offices)

                                -----------------

                                 1996 Stock Plan
                            (Full Title of the Plan)

                                -----------------

                                GORDON R. ARNOLD
                                    PRESIDENT
                           SIERRA MONITOR CORPORATION
                                1991 Tarob Court
                           Milpitas, California 95035
                     (Name and address of agent for service)

                                 (408) 262-6611
          (Telephone number, including area code, of agent for service)

                                     Copy to
                              Aaron J. Alter, Esq.
                        WILSON SONSINI GOODRICH & ROSATI
                            Professional Corporation
                               650 Page Mill Road
                        Palo Alto, California 94304-1050

================================================================================



<PAGE>

<TABLE>

                         CALCULATION OF REGISTRATION FEE

<CAPTION>
=======================================================================================================================
                                                                  Proposed            Proposed
                Title of                       Amount              Maximum            Maximum
             Securities to                      to be             Offering           Aggregated         Amount of
             be Registered                   Registered        Price Per Share     Offering Price    Registration Fee
- -----------------------------------------------------------------------------------------------------------------------
<S>                                            <C>              <C>                   <C>                 <C>
Common Stock
   - 1996 Stock Plan
      shares subject to outstanding             20,000           $ 0.375              $ 7,500              $ 2.27
      options
      shares available for future              580,000          $0.34375(1)           $199,375             $60.42
      option grant                                              --------
         TOTALS                                600,000                                $206,875            $100.00
                                               =======                                ========            =======
<FN>
- ----------------
(1)  Estimated  in  accordance  with  Rule  457(h)  solely  for the  purpose  of
calculating  the  amount  of the  registration  fee on the  basis of 100% of the
closing  price of the last  reported  sale of the  Company's  Common Stock as of
December 18, 1996 as traded on the Nasdaq Bulletin Board.
</FN>
</TABLE>

<PAGE>


                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT


Item 3.  Information Incorporated by Reference.

      There are hereby incorporated by reference in this registration  statement
the following documents and information heretofore filed with the Securities and
Exchange Commission:

      1. The  Company's  Annual  Report on Form 10-K for the  fiscal  year ended
December 31, 1995,  filed pursuant to Section 13 of the Securities  Exchange Act
of 1934 (the "Exchange Act").

      2. The Company's  Quarterly  Reports on Form 10-Q for the fiscal  quarters
ended March 31, 1996,  June 30, 1996 and  September  30, 1996 filed  pursuant to
Section 13 of the Exchange Act.

      All documents filed by the Company  pursuant to Sections 13(a),  13(c), 14
and 15(d) of the Exchange Act, after the date of this registration statement and
prior to the  filing of a  post-effective  amendment  which  indicates  that all
securities  offered  have been sold or which  deregisters  all  securities  then
remaining  unsold,  shall be  deemed to be  incorporated  by  reference  in this
registration  statement  and to be part  hereof  from  the date of  filing  such
documents.

Item 4.  Description of Securities.

      Not applicable.

Item 5.  Interests of Named Experts and Counsel.

      Counsel for the Company,  Wilson Sonsini  Goodrich & Rosati,  Professional
Corporation,  650 Page Mill Road, Palo Alto, California 94304-1050, has rendered
an opinion to the effect that the Common Stock offered hereby will,  when issued
in  accordance  with the  registrant's  1996 Stock Plan,  be legally and validly
issued, fully paid and non-assessable.

Item 6. Indemnification of Directors and Officers.

       Section 317 of the  California  Corporations  Code  authorizes a court to
award,  or a corporation's  Board of Directors to grant,  indemnity to directors
and officers in terms  sufficiently broad to permit such  indemnification  under
certain  circumstances  for liabilities  (including  reimbursement  for expenses
incurred)  arising under the Securities  Act of 1933, as amended.  The Company's
Articles of  Incorporation,  as amended,  limit the  liability of the  Company's
directors  for monetary  damages  arising from breach of their  fiduciary  duty,
except to the extent  otherwise  required by the California  Corporations  Code.
Article VI of the Company's Bylaws provides for indemnification of the Company's
directors, officers, employees, and other agents to the maximum extent permitted
by the California Corporations Code.

<PAGE>

Item 7.  Exemption from Registration Claimed.

      Not applicable.

Item 8.  Exhibits.

           Exhibit
           Number
           ------
           4.1              1996 Stock Plan.
           4.2              Form of Stock Option Agreement.
           5.1              Opinion of Wilson Sonsini Goodrich & Rosati, P.C.
           23.1             Consent of KPMG Peat Marwick LLP.
           23.2             Consent of Wilson Sonsini Goodrich & Rosati, P.C. 
                            (included in Exhibit 5.1 hereto).
           24.1             Power of Attorney (included herein on page 6 of the
                            registration statement).

Item 9.  Undertakings

      (a)  The undersigned registrant hereby undertakes:

           (1) To file,  during  any  period in which  offers or sales are being
made, a post-effective  amendment to this registration  statement to include any
material  information  with respect to the plan of  distribution  not previously
disclosed  in  the  registration  statement  or  any  material  change  to  such
information in the registration statement.

           (2) That,  for the purpose of  determining  any  liability  under the
Securities  Act  of  1933  (the  "Securities  Act"),  each  such  post-effective
amendment  shall be deemed to be a new  registration  statement  relating to the
securities  offered  therein,  and the offering of such  securities at that time
shall be deemed to be the initial bona fide offering thereof.

           (3)  To  remove  from  registration  by  means  of  a  post-effective
amendment  any of the  securities  being  registered  which remain unsold at the
termination of the offering.

      (b) The undersigned  registrant  hereby  undertakes  that, for purposes of
determining  any  liability  under  the  Securities  Act,  each  filing  of  the
registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Exchange Act (and, where  applicable,  each filing of an employee benefit plan's
annual  report   pursuant  to  Section  15(d)  of  the  Exchange  Act)  that  is
incorporated by reference in the registration  statement shall be deemed to be a
new registration  statement relating to the securities offered therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.


<PAGE>


      (c)  Insofar  as  indemnification   for  liabilities   arising  under  the
Securities Act may be permitted to directors,  officers and controlling  persons
of the  registrant  pursuant to the  foregoing  provisions,  or  otherwise,  the
registrant  has been advised that in the opinion of the  Securities and Exchange
Commission  such  indemnification  is against  public policy as expressed in the
Securities Act and is, therefore,  unenforceable.  In the event that a claim for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
registrant of expenses  incurred or paid by a director,  officer or  controlling
person of the  registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against  public policy as expressed in the  Securities
Act and will be governed by the final adjudication of such issue.



<PAGE>


                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-8 and has  duly  caused  this  registration
statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of Milpitas, California, on December 18, 1996.

                                           SIERRA MONITOR CORPORATION

                                           By:  /s/ GORDON R. ARNOLD
                                              ------------------------
                                                Gordon R. Arnold
                                                President

<TABLE>
                                POWER OF ATTORNEY

      KNOW ALL  PERSONS BY THESE  PRESENTS,  that each  person  whose  signature
appears below constitutes and appoints Gordon R. Arnold,  his  attorney-in-fact,
each with the power of substitution,  for him in any and all capacities, to sign
any amendments to this registration statement on Form S-8, and to file the same,
with  exhibits  thereto and other  documents in connection  therewith,  with the
Securities  and Exchange  Commission,  hereby  ratifying and confirming all that
each of said attorney-in-fact, or his substitute or substitutes, may do or cause
to be done by virtue hereof.

      Pursuant  to  the  requirements  of  the  Securities  Act  of  1933,  this
registration  statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated:

<CAPTION>
      Signature                                        Title                                       Date
      ---------                                        -----                                       ----
<S>                                       <C>                                               <C>
/s/ GORDON R. ARNOLD                      President, Chief Financial Officer,               December 18, 1996
- --------------------                      Secretary, Director
Gordon R. Arnold                          (Principal Executive, Financial and
                                           Accounting Officer)

/s/ MICHAEL C. FARR                       Vice President of Operations                      December 18, 1996
- -------------------
Michael C. Farr

/s/ STEPHEN R. FEREE                      Vice President of Marketing                       December 18, 1996
- --------------------
Stephen R. Feree

/s/ C. RICHARD KRAMLICH                   Director                                          December 18, 1996
- -----------------------
C. Richard Kramlich

/s/ JAY T. LAST                           Director                                          December 18, 1996
- ---------------
Jay T. Last

</TABLE>



                                                                     EXHIBIT 4.1


                           SIERRA MONITOR CORPORATION

                                 1996 STOCK PLAN


        1.     Purposes of the Plan.  The purposes of this Stock Plan are:

               o        to attract and retain the best  available  personnel for
                        positions of substantial responsibility,

               o        to provide additional incentive to Employees,  Directors
                        and Consultants, and

               o        to promote the success of the Company's business.

        Options  granted  under  the  Plan may be  Incentive  Stock  Options  or
Nonstatutory  Stock Options,  as determined by the  Administrator at the time of
grant. Stock Purchase Rights may also be granted under the Plan.

         2. Definitions. As used herein, the following definitions shall apply:

               (a)  "Administrator"  means the Board or any of its Committees as
shall be administering the Plan, in accordance with Section 4 of the Plan.

               (b) "Applicable  Laws" means the legal  requirements  relating to
the  administration of stock option plans under U. S. state corporate laws, U.S.
federal  and state  securities  laws,  the Code and the  applicable  laws of any
foreign country or  jurisdiction  where Options or Stock Purchase Rights are, or
will be, granted under the Plan.

               (c) "Board" means the Board of Directors of the Company.

               (d) "Code" means the Internal Revenue Code of 1986, as amended.

               (e)  "Committee"  means a  Committee  appointed  by the  Board in
accordance with Section 4 of the Plan.

               (f) "Common Stock" means the Common Stock of the Company.

               (g)  "Company"  means Sierra  Monitor  Corporation,  a California
corporation.

               (h) "Consultant" means any person,  including an advisor, engaged
by the  Company  or a  Parent  or  Subsidiary  to  render  services  and  who is
compensated  for such services,  and any Director who is not also an Employee of
the Company.

               (i) "Continuous  Status as an Employee or Consultant"  means that
the  employment  or consulting  relationship  with the Company,  any Parent,  or
Subsidiary,  is not interrupted or terminated.  Continuous Status as an Employee
or Consultant  shall not be considered  interrupted in the case of (i) any leave
of absence  approved by the Company or (ii) transfers  between  locations of the
Company 

<PAGE>

or between the Company, its Parent, any Subsidiary, or any successor. A leave of
absence approved by the Company shall include sick leave, military leave, or any
other personal leave  approved by an authorized  representative  of the Company.
For purposes of Incentive  Stock Options,  no such leave may exceed ninety days,
unless  reemployment  upon  expiration of such leave is guaranteed by statute or
contract.  If reemployment upon expiration of a leave of absence approved by the
Company is not so guaranteed, on the 181st day of such leave any Incentive Stock
Option  held by the  Optionee  shall cease to be treated as an  Incentive  Stock
Option and shall be treated for tax purposes as a Nonstatutory Stock Option.

               (j) "Director" means a member of the Board.

               (k) "Disability" means total and permanent  disability as defined
in Section 22(e)(3) of the Code.

               (l)  "Employee"   means  any  person,   including   Officers  and
Directors,  employed by the Company or any Parent or  Subsidiary of the Company.
Neither  service as a Director  nor payment of a  director's  fee by the Company
shall be sufficient to constitute "employment" by the Company.

               (m) "Exchange Act" means the Securities  Exchange Act of 1934, as
amended.

               (n) "Fair  Market  Value"  means,  as of any  date,  the value of
Common Stock determined as follows:

                        (i) If the  Common  Stock is listed  on any  established
stock exchange or a national  market system,  including  without  limitation the
Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market,
its Fair Market  Value  shall be the closing  sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the time of  determination,  as reported in
The  Wall  Street  Journal  or such  other  source  as the  Administrator  deems
reliable;

                        (ii)  If the  Common  Stock  is  regularly  quoted  by a
recognized  securities  dealer but  selling  prices are not  reported,  the Fair
Market  Value of a Share of Common  Stock shall be the mean between the high bid
and low asked prices for the Common  Stock on the last market  trading day prior
to the day of  determination,  as reported  in The Wall  Street  Journal or such
other source as the Administrator deems reliable;

                        (iii) In the  absence of an  established  market for the
Common  Stock,  the Fair Market Value shall be  determined  in good faith by the
Administrator.

               (o) "Incentive  Stock Option" means an Option intended to qualify
as an incentive  stock option  within the meaning of Section 422 of the Code and
the regulations promulgated thereunder.

               (p)  "Nonstatutory  Stock Option" means an Option not intended to
qualify as an 


                                      -2-
<PAGE>


Incentive Stock Option.

               (q) "Notice of Grant" means a written notice  evidencing  certain
terms and conditions of an individual  Option or Stock Purchase Right grant. The
Notice of Grant is part of the Option Agreement.

               (r)  "Officer"  means a person who is an  officer of the  Company
within  the  meaning  of  Section  16 of the  Exchange  Act  and the  rules  and
regulations promulgated thereunder.

               (s) "Option" means a stock option granted pursuant to the Plan.

               (t)  "Option  Agreement"  means a written  agreement  between the
Company and an Optionee  evidencing  the terms and  conditions  of an individual
Option grant. The Option Agreement is subject to the terms and conditions of the
Plan.

               (u) "Option Exchange Program" means a program whereby outstanding
options are surrendered in exchange for options with a lower exercise price.

               (v) "Optioned  Stock" means the Common Stock subject to an Option
or Stock Purchase Right.

               (w)  "Optionee"  means an  Employee  or  Consultant  who holds an
outstanding Option or Stock Purchase Right.

               (x)  "Parent"  means  a  "parent  corporation",  whether  now  or
hereafter existing, as defined in Section 424(e) of the Code.

               (y)     "Plan" means this 1996 Stock Plan.

               (z)  "Restricted  Stock" means  shares of Common  Stock  acquired
pursuant to a grant of Stock Purchase Rights under Section 11 below.

               (aa)  "Restricted  Stock  Purchase  Agreement"  means  a  written
agreement  between  the  Company  and the  Optionee  evidencing  the  terms  and
restrictions  applying to stock  purchased  under a Stock  Purchase  Right.  The
Restricted  Stock  Purchase  Agreement is subject to the terms and conditions of
the Plan and the Notice of Grant.

               (bb) "Rule  16b-3"  means Rule 16b-3 of the  Exchange  Act or any
successor to Rule 16b-3,  as in effect when  discretion is being  exercised with
respect to the Plan.

               (cc)  "Section  16(b)"  means  Section  16(b)  of the  Securities
Exchange Act of 1934, as amended.

               (dd) "Share"  means a share of the Common  Stock,  as adjusted in
accordance with

                                      -3-
<PAGE>


Section 13 of the Plan.

               (ee) "Stock  Purchase  Right" means the right to purchase  Common
Stock pursuant to Section 11 of the Plan, as evidenced by a Notice of Grant.

               (ff) "Subsidiary" means a "subsidiary  corporation,"  whether now
or hereafter existing, as defined in Section 424(f) of the Code.

        3. Stock Subject to the Plan. Subject to the provisions of Section 13 of
the Plan, the maximum  aggregate number of Shares which may be optioned and sold
under the Plan is 600,000 Shares. The Shares may be authorized, but unissued, or
reacquired Common Stock.

               If  an  Option  or  Stock   Purchase  Right  expires  or  becomes
unexercisable  without having been exercised in full, or is surrendered pursuant
to an Option Exchange Program, the unpurchased Shares which were subject thereto
shall become  available for future grant or sale under the Plan (unless the Plan
has terminated);  provided,  however, that Shares that have actually been issued
under the  Plan,  whether  upon  exercise  of an  Option or Right,  shall not be
returned  to the Plan and shall not become  available  for  future  distribution
under the Plan, except that if Shares of Restricted Stock are repurchased by the
Company at their original purchase price, such Shares shall become available for
future grant under the Plan.

        4.     Administration of the Plan.

               (a)     Procedure.

                       (i)  Multiple  Administrative  Bodies.  The  Plan  may be
administered by different bodies with respect to Directors, Officers who are not
Directors, and Employees who are neither Directors nor Officers.

                       (ii) Section 162(m). To the extent that the Administrator
determines  it  to  be  desirable  to  qualify  Options  granted   hereunder  as
"performance-based  compensation"  within the  meaning of Section  162(m) of the
Code,  the Plan shall be  administered  by a Committee  of two or more  "outside
directors" within the meaning of Section 162(m) of the Code.

                       (iii)  Rule  16b-3.  To the extent  desirable  to qualify
transactions hereunder as exempt under Rule 16b-3, the transactions contemplated
hereunder  shall be structured to satisfy the  requirements  for exemption under
Rule 16b-3.

                       (iv) Other Administration.  Other than as provided above,
the Plan  shall be  administered  by (A) the  Board  or (B) a  Committee,  which
committee shall be constituted to satisfy Applicable Laws.

               (b) Powers of the Administrator. Subject to the provisions of the
Plan, and in the case

                                      -4-
<PAGE>

of a Committee,  subject to the specific  duties  delegated by the Board to such
Committee, the Administrator shall have the authority, in its discretion:

                       (i) to  determine  the Fair  Market  Value of the  Common
Stock, in accordance with Section 2(n) of the Plan;

                       (ii) to select  the  Consultants  and  Employees  to whom
Options and Stock Purchase Rights may be granted hereunder;

                       (iii) to  determine  the number of shares of Common Stock
to be covered by each Option and Stock Purchase Right granted hereunder;

                       (iv) to  approve  forms of  agreement  for use  under the
Plan;

                       (v)  to   determine   the  terms  and   conditions,   not
inconsistent  with the terms of the Plan, of any award granted  hereunder.  Such
terms and conditions  include,  but are not limited to, the exercise price,  the
time or times when Options or Stock Purchase Rights may be exercised  (which may
be based on  performance  criteria),  any  vesting  acceleration  or  waiver  of
forfeiture restrictions,  and any restriction or limitation regarding any Option
or Stock Purchase Right or the shares of Common Stock relating thereto, based in
each case on such factors as the  Administrator,  in its sole discretion,  shall
determine;

                       (vi) to reduce the exercise  price of any Option or Stock
Purchase Right to the then current Fair Market Value if the Fair Market Value of
the Common  Stock  covered by such  Option or Stock  Purchase  Right  shall have
declined since the date the Option or Stock Purchase Right was granted;

                       (vii) to construe and interpret the terms of the Plan and
awards granted pursuant to the Plan;

                       (viii)  to   prescribe,   amend  and  rescind  rules  and
regulations  relating to the Plan,  including rules and regulations  relating to
sub-plans  established for the purpose of qualifying for preferred tax treatment
under foreign tax laws;

                       (ix) to modify  or amend  each  Option or Stock  Purchase
Right  (subject  to Section  15(c) of the  Plan),  including  the  discretionary
authority to extend the post-termination exercisability period of Options longer
than is otherwise provided for in the Plan;

                       (x)  to  allow  Optionees  to  satisfy   withholding  tax
obligations  by  electing  to have the  Company  withhold  from the Shares to be
issued upon exercise of an Option or Stock  Purchase Right that number of Shares
having a Fair Market Value equal to the amount required to be withheld. The Fair
Market Value of the Shares to be withheld  shall be  determined on the date that
the  amount of tax to be  withheld  is to be  determined.  All  elections  by an
Optionee to have Shares withheld for 

                                      -5-
<PAGE>


this  purpose  shall  be made in such  form and  under  such  conditions  as the
Administrator may deem necessary or advisable;

                       (xi) to authorize  any person to execute on behalf of the
Company  any  instrument  required  to  effect  the  grant of an Option or Stock
Purchase Right previously granted by the Administrator;

                       (xii) to institute an Option Exchange Program;

                       (xiii) to make all other determinations  deemed necessary
or advisable for administering the Plan.

               (c)  Effect  of  Administrator's  Decision.  The  Administrator's
decisions,  determinations and interpretations shall be final and binding on all
Optionees and any other holders of Options or Stock Purchase Rights.

        5. Eligibility. Nonstatutory Stock Options and Stock Purchase Rights may
be granted to Employees and Consultants.  Incentive Stock Options may be granted
only to Employees.

        6.     Limitations.

               (a)  Each  Option  shall  be  designated  in the  written  option
agreement as either an Incentive  Stock Option or a  Nonstatutory  Stock Option.
However, notwithstanding such designation, to the extent that the aggregate Fair
Market Value of the Shares with  respect to which  Incentive  Stock  Options are
exercisable  for the first time by the Optionee  during any calendar year (under
all plans of the Company and any Parent or Subsidiary)  exceeds  $100,000,  such
Options shall be treated as  Nonstatutory  Stock  Options.  For purposes of this
Section 6(a),  Incentive  Stock Options shall be taken into account in the order
in which  they  were  granted.  The Fair  Market  Value of the  Shares  shall be
determined as of the time the Option with respect to such Shares is granted.

               (b) Neither the Plan nor any Option or Stock Purchase Right shall
confer upon an Optionee  any right with  respect to  continuing  the  Optionee's
employment or consulting relationship with the Company, nor shall they interfere
in any way with the  Optionee's  right or the Company's  right to terminate such
employment or consulting relationship at any time, with or without cause.

               (c) The following limitations shall apply to grants of Options to
Employees:

                       (i) No Employee  shall be granted,  in any fiscal year of
the Company, Options to purchase more than 100,000 Shares.

                       (ii) In connection with his or her initial employment, an
Employee may be granted  Options to purchase up to an  additional  25,000 Shares
which shall not count against the limit set forth in subsection (i) above.

                                      -6-
<PAGE>

                       (iii)  The  foregoing   limitations   shall  be  adjusted
proportionately in connection with any change in the Company's capitalization as
described in Section 13.

                       (iv) If an Option is cancelled in the same fiscal year of
the Company in which it was granted (other than in connection with a transaction
described  in Section  13),  the  cancelled  Option will be counted  against the
limits set forth in  subsections  (i) and (ii) above.  For this purpose,  if the
exercise  price of an Option is reduced,  the  transaction  will be treated as a
cancellation of the Option and the grant of a new Option.

        7. Term of Plan.  Subject  to  Section  19 of the Plan,  the Plan  shall
become  effective  upon the earlier to occur of its adoption by the Board or its
approval by the  shareholders  of the Company as  described in Section 19 of the
Plan. It shall continue in effect for a term of ten (10) years unless terminated
earlier under Section 15 of the Plan.

        8. Term of Option. The term of each Option shall be stated in the Notice
of Grant; provided,  however, that in the case of an Incentive Stock Option, the
term shall be ten (10) years from the date of grant or such  shorter term as may
be provided in the Notice of Grant.  Moreover, in the case of an Incentive Stock
Option  granted to an Optionee  who, at the time the  Incentive  Stock Option is
granted, owns stock representing more than ten percent (10%) of the voting power
of all classes of stock of the Company or any Parent or Subsidiary,  the term of
the  Incentive  Stock  Option  shall be five (5) years from the date of grant or
such shorter term as may be provided in the Notice of Grant.

        9.     Option Exercise Price and Consideration.

               (a) Exercise  Price.  The per share exercise price for the Shares
to be issued  pursuant  to  exercise  of an Option  shall be  determined  by the
Administrator, subject to the following:

                       (i)    In the case of an Incentive Stock Option

                              (A)  granted to an  Employee  who, at the time the
Incentive Stock Option is granted, owns stock representing more than ten percent
(10%) of the voting  power of all  classes of stock of the Company or any Parent
or  Subsidiary,  the per Share  exercise price shall be no less than 110% of the
Fair Market Value per Share on the date of grant.

                              (B) granted to any Employee other than an Employee
described in paragraph (A) immediately above, the per Share exercise price shall
be no less than 100% of the Fair Market Value per Share on the date of grant.

                       (ii) In the case of a Nonstatutory  Stock Option, the per
Share exercise price shall be determined by the Administrator.  In the case of a
Nonstatutory   Stock   Option   intended   to  qualify   as   "performance-based
compensation"  within the meaning of Section  162(m) of the Code,  the per Share
exercise  price shall be no less than 100% of the Fair Market Value per Share on
the date of grant.

                                      -7-
<PAGE>

               (b) Waiting Period and Exercise  Dates.  At the time an Option is
granted,  the Administrator  shall fix the period within which the Option may be
exercised and shall determine any conditions  which must be satisfied before the
Option may be  exercised.  In so doing,  the  Administrator  may specify that an
Option may not be exercised until the completion of a service period.

               (c) Form of Consideration.  The Administrator shall determine the
acceptable form of consideration for exercising an Option,  including the method
of payment.  In the case of an Incentive Stock Option,  the Administrator  shall
determine  the  acceptable  form of  consideration  at the time of  grant.  Such
consideration may consist entirely of:

                       (i)    cash;

                       (ii)   check;

                       (iii)  promissory note;

                       (iv)  other  Shares  which  (A) in  the  case  of  Shares
acquired  upon  exercise of an option,  have been owned by the Optionee for more
than six months on the date of  surrender,  and (B) have a Fair Market  Value on
the date of surrender equal to the aggregate  exercise price of the Shares as to
which said Option shall be exercised;

                       (v)  consideration   received  by  the  Company  under  a
cashless  exercise  program  implemented  by the Company in connection  with the
Plan;

                       (vi) a reduction  in the amount of any Company  liability
to  the  Optionee,  including  any  liability  attributable  to  the  Optionee's
participation  in  any   Company-sponsored   deferred  compensation  program  or
arrangement;

                       (vii)  any  combination  of  the  foregoing   methods  of
payment; or

                       (viii) such other consideration and method of payment for
the issuance of Shares to the extent permitted by Applicable Laws.

        10.    Exercise of Option.

               (a) Procedure for Exercise;  Rights as a Shareholder.  Any Option
granted hereunder shall be exercisable according to the terms of the Plan and at
such times and under such conditions as determined by the  Administrator and set
forth in the Option Agreement.

                       An Option may not be exercised for a fraction of a Share.

                                      -8-

<PAGE>

                       An Option  shall be  deemed  exercised  when the  Company
receives:  (i)  written  notice  of  exercise  (in  accordance  with the  Option
Agreement)  from the person  entitled  to  exercise  the  Option,  and (ii) full
payment  for the Shares  with  respect to which the  Option is  exercised.  Full
payment may consist of any consideration and method of payment authorized by the
Administrator  and permitted by the Option Agreement and the Plan. Shares issued
upon  exercise of an Option  shall be issued in the name of the  Optionee or, if
requested  by the  Optionee,  in the name of the Optionee and his or her spouse.
Until the stock  certificate  evidencing  such Shares is issued (as evidenced by
the  appropriate  entry on the  books  of the  Company  or of a duly  authorized
transfer  agent of the  Company),  no right to vote or receive  dividends or any
other rights as a  shareholder  shall exist with respect to the Optioned  Stock,
notwithstanding the exercise of the Option. The Company shall issue (or cause to
be issued) such stock  certificate  promptly  after the Option is exercised.  No
adjustment  will be made for a dividend or other right for which the record date
is prior to the date the stock  certificate  is issued,  except as  provided  in
Section 13 of the Plan.

                       Exercising  an Option in any manner  shall  decrease  the
number of Shares  thereafter  available,  both for  purposes of the Plan and for
sale  under the  Option,  by the  number  of  Shares  as to which the  Option is
exercised.

               (b)  Termination of Employment or Consulting  Relationship.  Upon
termination  of an Optionee's  Continuous  Status as an Employee or  Consultant,
other than upon the Optionee's  death or  Disability,  the Optionee may exercise
his or her Option  within such period of time as is  specified  in the Notice of
Grant to the extent  that he or she is  entitled  to  exercise it on the date of
termination  (but in no  event  later  than the  expiration  of the term of such
Option as set forth in the Notice of Grant).  In the absence of a specified time
in the Notice of Grant, the Option shall remain exercisable for three (3) months
following the Optionee's termination.  In the case of an Incentive Stock Option,
such period of time for exercise shall not exceed three (3) months from the date
of termination.  If, on the date of termination, the Optionee is not entitled to
exercise  his or her  entire  Option,  the Shares  covered by the  unexercisable
portion of the Option  shall  revert to the Plan.  If,  after  termination,  the
Optionee  does not exercise his or her Option  within the time  specified by the
Administrator, the Option shall terminate, and the Shares covered by such Option
shall revert to the Plan.

               Notwithstanding  the above, in the event of an Optionee's  change
in status from Consultant to Employee or Employee to Consultant,  the Optionee's
Continuous Status as an Employee or Consultant shall not automatically terminate
solely as a result of such change in status.  In such event,  an Incentive Stock
Option  held by the  Optionee  shall cease to be treated as an  Incentive  Stock
Option and shall be treated for tax  purposes  as a  Nonstatutory  Stock  Option
three months and one day following such change of status.

               (c)  Disability of Optionee.  Upon  termination  of an Optionee's
Continuous  Status as an Employee or  Consultant  as a result of the  Optionee's
Disability,  the  Optionee  may  exercise  his or her Option at any time  within
twelve (12) months from the date of termination, but only to the extent that the
Optionee is entitled to exercise it on the date of termination  (and in no event
later than the

                                      -9-

<PAGE>

expiration  of the term of the Option as set forth in the Notice of Grant).  If,
on the date of termination,  the Optionee is not entitled to exercise his or her
entire  Option,  the Shares covered by the  unexercisable  portion of the Option
shall revert to the Plan. If, after termination,  the Optionee does not exercise
his or her Option within the time specified herein,  the Option shall terminate,
and the Shares covered by such Option shall revert to the Plan.

               (d) Death of Optionee.  Upon the death of an Optionee, the Option
may be exercised  at any time within  twelve (12) months  following  the date of
death (but in no event later than the  expiration  of the term of such Option as
set forth in the Notice of Grant),  by the Optionee's  estate or by a person who
acquires the right to exercise the Option by bequest or inheritance, but only to
the extent that the Optionee  would have been entitled to exercise the Option on
the date of death.  If, at the time of death,  the  Optionee is not  entitled to
exercise  his or her  entire  Option,  the Shares  covered by the  unexercisable
portion of the Option shall  immediately  revert to the Plan. If the  Optionee's
estate or the person who acquires the right to exercise the Option by bequest or
inheritance does not exercise the Option within the time specified  herein,  the
Option shall  terminate,  and the Shares  covered by such Option shall revert to
the Plan.

               (e) Buyout Provisions. The Administrator may at any time offer to
buy out for a payment in cash or Shares, an Option  previously  granted based on
such terms and conditions as the  Administrator  shall establish and communicate
to the Optionee at the time that such offer is made.

        11.    Stock Purchase Rights.

               (a)  Rights to  Purchase.  Stock  Purchase  Rights  may be issued
either alone,  in addition to, or in tandem with other awards  granted under the
Plan  and/or  cash  awards  made  outside of the Plan.  After the  Administrator
determines  that it will offer Stock  Purchase  Rights under the Plan,  it shall
advise the  offeree  in  writing,  by means of a Notice of Grant,  of the terms,
conditions and restrictions related to the offer, including the number of Shares
that the offeree  shall be entitled to purchase,  the price to be paid,  and the
time  within  which the  offeree  must  accept  such  offer.  The offer shall be
accepted by  execution  of a  Restricted  Stock  Purchase  Agreement in the form
determined by the Administrator.

               (b)  Repurchase  Option.  Unless  the  Administrator   determines
otherwise,  the Restricted  Stock Purchase  Agreement  shall grant the Company a
repurchase option  exercisable upon the voluntary or involuntary  termination of
the purchaser's  employment with the Company for any reason  (including death or
Disability).   The  purchase  price  for  Shares  repurchased  pursuant  to  the
Restricted  Stock  purchase  agreement  shall be the original  price paid by the
purchaser and may be paid by cancellation  of any  indebtedness of the purchaser
to the Company.  The repurchase  option shall lapse at a rate  determined by the
Administrator.

               (c) Other  Provisions.  The Restricted  Stock Purchase  Agreement
shall contain such other terms,  provisions and conditions not inconsistent with
the Plan as may be determined by the Administrator in its sole discretion.

                                      -10-

<PAGE>

               (d) Rights as a  Shareholder.  Once the Stock  Purchase  Right is
exercised,  the  purchaser  shall  have  the  rights  equivalent  to  those of a
shareholder, and shall be a shareholder when his or her purchase is entered upon
the records of the duly authorized  transfer agent of the Company. No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the Stock Purchase Right is exercised, except as provided in Section 13
of the Plan.

        12.  Non-Transferability  of Options and Stock Purchase  Rights.  Unless
determined otherwise by the Administrator, an Option or Stock Purchase Right may
not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any
manner other than by will or by the laws of descent or  distribution  and may be
exercised,  during the lifetime of the Optionee,  only by the  Optionee.  If the
Administrator makes an Option or Stock Purchase Right transferable,  such Option
or Stock  Purchase Right shall contain such  additional  terms and conditions as
the Administrator deems appropriate.

         13. Adjustments Upon Changes in Capitalization,  Dissolution, Merger or
Asset Sale.

               (a) Changes in Capitalization.  Subject to any required action by
the shareholders of the Company, the number of shares of Common Stock covered by
each  outstanding  Option and Stock Purchase Right,  and the number of shares of
Common Stock which have been  authorized  for issuance  under the Plan but as to
which no Options or Stock  Purchase  Rights have yet been  granted or which have
been returned to the Plan upon  cancellation or expiration of an Option or Stock
Purchase  Right,  as well as the price per share of Common Stock covered by each
such  outstanding  Option  or Stock  Purchase  Right,  shall be  proportionately
adjusted for any  increase or decrease in the number of issued  shares of Common
Stock  resulting  from a stock  split,  reverse  stock  split,  stock  dividend,
combination or  reclassification  of the Common Stock,  or any other increase or
decrease in the number of issued shares of Common Stock effected without receipt
of  consideration  by the Company;  provided,  however,  that  conversion of any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of  consideration."  Such adjustment shall be made by the Board,
whose  determination  in that respect  shall be final,  binding and  conclusive.
Except as  expressly  provided  herein,  no issuance by the Company of shares of
stock of any class, or securities convertible into shares of stock of any class,
shall affect, and no adjustment by reason thereof shall be made with respect to,
the  number or price of shares of  Common  Stock  subject  to an Option or Stock
Purchase Right.

               (b)  Dissolution  or  Liquidation.  In the event of the  proposed
dissolution or liquidation of the Company,  the Administrator  shall notify each
Optionee as soon as  practicable  prior to the  effective  date of such proposed
transaction.  The Administrator in its discretion may provide for an Optionee to
have the right to exercise  his or her Option  until ten (10) days prior to such
transaction as to all of the Optioned Stock covered thereby, including Shares as
to which the  Option  would not  otherwise  be  exercisable.  In  addition,  the
Administrator  may provide that any Company  repurchase option applicable to any
Shares  purchased upon exercise of an Option or Stock Purchase Right shall lapse
as to all such Shares,  provided the proposed  dissolution or liquidation  takes
place at the time and in the manner contemplated.  To the extent it has not been
previously  exercised,   an  Option  or

                                      -11-

<PAGE>


Stock Purchase Right will terminate  immediately  prior to the  consummation  of
such proposed action.

               (c) Merger or Asset Sale. In the event of a merger of the Company
with or into another corporation, or the sale of substantially all of the assets
of the  Company,  each  outstanding  Option and Stock  Purchase  Right  shall be
assumed  or  an  equivalent   option  or  right  substituted  by  the  successor
corporation or a Parent or Subsidiary of the successor corporation. In the event
that the successor corporation refuses to assume or substitute for the Option or
Stock  Purchase  Right,  the Optionee  shall fully vest in and have the right to
exercise the Option or Stock  Purchase  Right as to all of the  Optioned  Stock,
including Shares as to which it would not otherwise be vested or exercisable. If
an Option or Stock Purchase  Right becomes fully vested and  exercisable in lieu
of assumption or  substitution  in the event of a merger or sale of assets,  the
Administrator  shall notify the Optionee that the Option or Stock Purchase Right
shall be fully  exercisable  for a period of fifteen  (15) days from the date of
such notice,  and the Option or Stock  Purchase  Right shall  terminate upon the
expiration  of such period.  For the purposes of this  paragraph,  the Option or
Stock  Purchase  Right shall be considered  assumed if,  following the merger or
sale of assets,  the option or right  confers  the right to purchase or receive,
for each Share of Optioned  Stock subject to the Option or Stock  Purchase Right
immediately prior to the merger or sale of assets,  the  consideration  (whether
stock,  cash, or other securities or property) received in the merger or sale of
assets by holders of Common Stock for each Share held on the  effective  date of
the transaction (and if holders were offered a choice of consideration, the type
of consideration chosen by the holders of a majority of the outstanding Shares);
provided,  however, that if such consideration received in the merger or sale of
assets was not solely common stock of the successor  corporation  or its Parent,
the Administrator  may, with the consent of the successor  corporation,  provide
for the  consideration  to be received  upon the exercise of the Option or Stock
Purchase Right,  for each Share of Optioned Stock subject to the Option or Stock
Purchase  Right,  to be solely common stock of the successor  corporation or its
Parent  equal in fair market  value to the per share  consideration  received by
holders of Common Stock in the merger or sale of assets.

        14.  Date of Grant.  The date of grant of an  Option  or Stock  Purchase
Right shall be, for all purposes,  the date on which the Administrator makes the
determination  granting such Option or Stock Purchase Right, or such other later
date as is determined by the Administrator. Notice of the determination shall be
provided to each Optionee within a reasonable time after the date of such grant.

        15.    Amendment and Termination of the Plan.

               (a) Amendment and  Termination.  The Board may at any time amend,
alter, suspend or terminate the Plan.

               (b) Shareholder  Approval.  The Company shall obtain  shareholder
approval of any Plan  amendment to the extent  necessary and desirable to comply
with Applicable Laws.

               (c) Effect of Amendment or Termination. No amendment, alteration,
suspension or  termination  of the Plan shall impair the rights of any Optionee,
unless mutually  agreed  otherwise

                                      -12-

<PAGE>


between the Optionee and the  Administrator,  which agreement must be in writing
and signed by the Optionee and the Company.

        16.    Conditions Upon Issuance of Shares.

               (a) Legal Compliance.  Shares shall not be issued pursuant to the
exercise of an Option or Stock Purchase Right unless the exercise of such Option
or Stock  Purchase  Right and the  issuance  and  delivery of such Shares  shall
comply  with  Applicable  Laws and shall be further  subject to the  approval of
counsel for the Company with respect to such compliance.

               (b) Investment Representations. As a condition to the exercise of
an Option or Stock Purchase Right, the Company may require the person exercising
such Option or Stock  Purchase Right to represent and warrant at the time of any
such  exercise  that the  Shares are being  purchased  only for  investment  and
without  any  present  intention  to sell or  distribute  such Shares if, in the
opinion of counsel for the Company, such a representation is required.

        17.  Inability  to Obtain  Authority.  The  inability  of the Company to
obtain authority from any regulatory body having  jurisdiction,  which authority
is deemed by the  Company's  counsel to be necessary to the lawful  issuance and
sale of any Shares  hereunder,  shall  relieve the Company of any  liability  in
respect of the failure to issue or sell such  Shares as to which such  requisite
authority shall not have been obtained.

        18.  Reservation of Shares.  The Company,  during the term of this Plan,
will at all times reserve and keep  available  such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

         19. Shareholder  Approval.  Continuance of the Plan shall be subject to
approval by the  shareholders of the Company within twelve (12) months before or
after the date the Plan is adopted.  Such shareholder approval shall be obtained
in the manner and to the degree required under Applicable Laws.


                                      -13-





                             1996 STOCK PLAN


        Unless  otherwise  defined  herein,  the terms defined in the Plan shall
have the same defined meanings in this Option Agreement.

I.  NOTICE OF STOCK OPTION GRANT

Optionee's Name and Address

        You have been granted an option to purchase Common Stock of the Company,
subject to the terms and  conditions of the Plan and this Option  Agreement,  as
follows:

        Grant Number                        _________________________

        Date of Grant                       _________________________

        Vesting Commencement Date           _________________________

        Exercise Price per Share            $________________________

        Total Number of Shares Granted      _________________________

        Total Exercise Price                $_________________________

        Type of Option:                     ___      Incentive Stock Option

                                            ___      Nonstatutory Stock Option

        Term/Expiration Date:               _________________________


     Vesting Schedule:

        This Option may be exercised,  in whole or in part,  in accordance  with
the following schedule:

        25% of the Shares  subject to the Option shall vest twelve  months after
the  Vesting  Commencement  Date,  and 1/48 of the Shares  subject to the Option
shall vest each month thereafter.

        Termination Period:

        This  Option  may be  exercised  for 90 days  after  termination  of the
Optionee's  employment or  consulting  relationship  with the Company.  Upon the
death or  Disability  of the  Optionee,  this Option

<PAGE>


may be exercised for such longer period as provided in the Plan. In the event of
the  Optionee's  change in status from  Employee to  Consultant or Consultant to
Employee,  this Option Agreement shall remain in effect.  In no event shall this
Option be exercised later than the Term/Expiration Date as provided above.

II.  AGREEMENT

        1. Grant of Option.  The Plan Administrator of the Company hereby grants
to the  Optionee  named  in the  Notice  of  Grant  attached  as  Part I of this
Agreement  (the  "Optionee")  an option (the "Option") to purchase the number of
Shares, as set forth in the Notice of Grant, at the exercise price per share set
forth in the Notice of Grant (the  "Exercise  Price"),  subject to the terms and
conditions of the Plan,  which is incorporated  herein by reference.  Subject to
Section  15(c) of the Plan,  in the event of a  conflict  between  the terms and
conditions of the Plan and the terms and  conditions  of this Option  Agreement,
the terms and conditions of the Plan shall prevail.

               If designated in the Notice of Grant as an Incentive Stock Option
("ISO"),  this Option is intended to qualify as an Incentive  Stock Option under
Section 422 of the Code.  However, if this Option is intended to be an Incentive
Stock  Option,  to the extent that it exceeds the $100,000  rule of Code Section
422(d) it shall be treated as a Nonstatutory Stock Option ("NSO").

        2.     Exercise of Option.

               (a) Right to Exercise. This Option is exercisable during its term
in accordance  with the Vesting  Schedule set out in the Notice of Grant and the
applicable provisions of the Plan and this Option Agreement.

               (b) Method of Exercise. This Option is exercisable by delivery of
an exercise notice,  in the form attached as Exhibit A (the "Exercise  Notice"),
which shall state the election to exercise  the Option,  the number of Shares in
respect of which the Option is being  exercised (the  "Exercised  Shares"),  and
such other  representations  and  agreements  as may be  required by the Company
pursuant to the provisions of the Plan.  The Exercise  Notice shall be signed by
the  Optionee  and shall be  delivered  in person  or by  certified  mail to the
Secretary of the Company. The Exercise Notice shall be accompanied by payment of
the aggregate  Exercise Price as to all Exercised  Shares.  This Option shall be
deemed to be  exercised  upon  receipt by the  Company  of such  fully  executed
Exercise Notice accompanied by such aggregate Exercise Price.

               No Shares shall be issued pursuant to the exercise of this Option
unless such issuance and exercise  complies with Applicable Laws.  Assuming such
compliance,  for income tax purposes the  Exercised  Shares shall be  considered
transferred  to the Optionee on the date the Option is exercised with respect to
such Exercised Shares.

         3. Method of Payment.  Payment of the aggregate Exercise Price shall be
by any of the  following,  or a  combination  thereof,  at the  election  of the
Optionee:

                                      -2-
<PAGE>

               (a) cash;

               (b) check;

               (c)  consideration  received  by the  Company  under  a  cashless
exercise program implemented by the Company in connection with the Plan;

               (d)  surrender  of other  Shares  which (i) in the case of Shares
acquired  upon  exercise of an option,  have been owned by the Optionee for more
than six (6) months on the date of surrender,  and (ii) have a Fair Market Value
on the date of surrender equal to the aggregate  Exercise Price of the Exercised
Shares; or

               (e) with the  Administrator's  consent,  delivery  of  Optionee's
promissory  note (the "Note") in the form  attached  hereto as Exhibit C, in the
amount of the aggregate Exercise Price of the Exercised Shares together with the
execution and delivery by the Optionee of the Security Agreement attached hereto
as Exhibit B. The Note shall bear  interest  at the  "applicable  federal  rate"
prescribed under the Code and its regulations at time of purchase,  and shall be
secured by a pledge of the Shares purchased by the Note pursuant to the Security
Agreement.

         4. Non-Transferability of Option. This Option may not be transferred in
any manner  otherwise than by will or by the laws of descent or distribution and
may be exercised during the lifetime of Optionee only by the Optionee. The terms
of the Plan and this  Option  Agreement  shall be  binding  upon the  executors,
administrators, heirs, successors and assigns of the Optionee.

         5. Term of Option.  This Option may be  exercised  only within the term
set out in the Notice of Grant,  and may be  exercised  during such term only in
accordance with the Plan and the terms of this Option Agreement.

         6. Tax  Consequences.  Some of the federal  and state tax  consequences
relating to this  Option,  as of the date of this  Option,  are set forth below.
THIS SUMMARY IS NECESSARILY  INCOMPLETE,  AND THE TAX LAWS AND  REGULATIONS  ARE
SUBJECT TO CHANGE.  THE OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE  EXERCISING
THIS OPTION OR DISPOSING OF THE SHARES.

               (a) Exercising the Option.

                       (i)  Nonstatutory  Stock  Option.  The Optionee may incur
regular  federal  income tax and state income tax  liability  upon exercise of a
NSO.  The  Optionee  will be  treated  as having  received  compensation  income
(taxable at ordinary income tax rates) equal to the excess,  if any, of the Fair
Market  Value  of the  Exercised  Shares  on the  date of  exercise  over  their
aggregate  Exercise Price. If the Optionee is an Employee or a former  Employee,
the Company will be required to withhold from his or her compensation or collect
from Optionee and pay to the  applicable  taxing  

                                      -3-
<PAGE>

authorities an amount in cash equal to a percentage of this compensation  income
at the time of  exercise,  and may  refuse to honor the  exercise  and refuse to
deliver  Shares if such  withholding  amounts are not  delivered  at the time of
exercise.

                       (ii) Incentive Stock Option.  If this Option qualifies as
an ISO, the Optionee will have no regular federal income tax or state income tax
liability  upon its  exercise,  although the excess,  if any, of the Fair Market
Value of the  Exercised  Shares on the date of  exercise  over  their  aggregate
Exercise Price will be treated as an adjustment to alternative  minimum  taxable
income for federal tax  purposes  and may  subject the  Optionee to  alternative
minimum tax in the year of exercise.  In the event that the Optionee undergoes a
change of status from Employee to Consultant,  any Incentive Stock Option of the
Optionee that remains  unexercised  shall cease to qualify as an Incentive Stock
Option and will be treated for tax  purposes as a  Nonstatutory  Stock Option on
the ninety-first (91st) day following such change of status.

               (b)     Disposition of Shares.

                       (i) NSO.  If the  Optionee  holds NSO Shares for at least
one year,  any gain  realized  on  disposition  of the Shares will be treated as
long-term capital gain for federal income tax purposes.

                       (ii) ISO. If the  Optionee  holds ISO Shares for at least
one year after exercise and two years after the grant date, any gain realized on
disposition of the Shares will be treated as long-term  capital gain for federal
income tax  purposes.  If the  Optionee  disposes of ISO Shares  within one year
after  exercise  or two years after the grant  date,  any gain  realized on such
disposition  will be treated as compensation  income (taxable at ordinary income
rates) to the extent of the excess,  if any, of the lesser of (A) the difference
between the Fair Market Value of the Shares acquired on the date of exercise and
the aggregate  Exercise Price,  or (B) the difference  between the sale price of
such Shares and the aggregate Exercise Price.

               (c) Notice of  Disqualifying  Disposition  of ISO Shares.  If the
Optionee sells or otherwise  disposes of any of the Shares acquired  pursuant to
an ISO on or before the later of (i) two years after the grant date, or (ii) one
year after the exercise date, the Optionee shall immediately  notify the Company
in  writing  of such  disposition.  The  Optionee  agrees  that he or she may be
subject to income tax  withholding  by the  Company on the  compensation  income
recognized  from such early  disposition of ISO Shares by payment in cash or out
of the current earnings paid to the Optionee.

        7. Entire Agreement;  Governing Law. The Plan is incorporated  herein by
reference. The Plan and this Option Agreement constitute the entire agreement of
the parties with  respect to the subject  matter  hereof and  supersede in their
entirety all prior  undertakings and agreements of the Company and Optionee with
respect to the subject matter hereof,  and may not be modified  adversely to the
Optionee's  interest  except by means of a writing  signed  by the  Company  and
Optionee.  This  agreement is governed by California law except for that body of
law pertaining to conflict of laws.

        8. NO GUARANTEE OF EMPLOYMENT. OPTIONEE ACKNOWLEDGES AND

                                      -4-


<PAGE>

AGREES THAT THE VESTING OF SHARES  PURSUANT  TO THE VESTING  SCHEDULE  HEREOF IS
EARNED ONLY BY  CONTINUING  SERVICE AS AN EMPLOYEE OR  CONSULTANT AT THE WILL OF
THE COMPANY (AND NOT THROUGH THE ACT OF BEING HIRED,  BEING GRANTED AN OPTION OR
PURCHASING SHARES HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT THIS
AGREEMENT, THE TRANSACTIONS  CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET
FORTH  HEREIN DO NOT  CONSTITUTE  AN  EXPRESS OR  IMPLIED  PROMISE OF  CONTINUED
ENGAGEMENT AS AN EMPLOYEE OR CONSULTANT FOR THE VESTING PERIOD,  FOR ANY PERIOD,
OR AT ALL, AND SHALL NOT INTERFERE WITH OPTIONEE'S  RIGHT OR THE COMPANY'S RIGHT
TO TERMINATE OPTIONEE'S EMPLOYMENT OR CONSULTING  RELATIONSHIP AT ANY TIME, WITH
OR WITHOUT CAUSE.

        By your  signature  and the  signature of the  Company's  representative
below,  you and the Company agree that this Option is granted under and governed
by the terms and conditions of the Plan and this Option Agreement.  Optionee has
reviewed  the Plan and  this  Option  Agreement  in their  entirety,  has had an
opportunity  to obtain the  advice of counsel  prior to  executing  this  Option
Agreement and fully understands all provisions of the Plan and Option Agreement.
Optionee hereby agrees to accept as binding,  conclusive and final all decisions
or  interpretations of the Administrator upon any questions relating to the Plan
and Option  Agreement.  Optionee  further  agrees to notify the Company upon any
change in the residence address indicated below.


OPTIONEE:                                            SIERRA MONITOR CORPORATION

____________________________________        By:_________________________________
Signature

____________________________________        Title:______________________________
Print Name

____________________________________        Dated:______________________________
Residence Address



_____________________________________ 

Dated:_______________________________


                                      -5-
<PAGE>

                                CONSENT OF SPOUSE

        The  undersigned  spouse of Optionee  has read and hereby  approves  the
terms and conditions of the Plan and this Option Agreement.  In consideration of
the  Company's  granting  his or her spouse the right to purchase  Shares as set
forth in the Plan and this Option Agreement, the undersigned hereby agrees to be
irrevocably  bound by the  terms  and  conditions  of the  Plan and this  Option
Agreement  and further  agrees that any  community  property  interest  shall be
similarly bound.  The undersigned  hereby appoints the  undersigned's  spouse as
attorney-in-fact  for the undersigned  with respect to any amendment or exercise
of rights under the Plan or this Option Agreement.


                               ---------------------------------------
                               Spouse of Optionee


                                      -6-
<PAGE>


                                    EXHIBIT A

                                 1996 STOCK PLAN

                                 EXERCISE NOTICE


Sierra Monitor Corporation
1991 Tarob Court
Milpitas, CA 95035

Attention:  Corporate Secretary

        1. Exercise of Option. Effective as of today,  ________________,  199__,
the undersigned  ("Purchaser") hereby elects to purchase  ______________  shares
(the "Shares") of the Common Stock of Sierra Monitor Corporation (the "Company")
under and  pursuant  to the 1996 Stock Plan (the  "Plan")  and the Stock  Option
Agreement  dated , 19___ (the "Option  Agreement").  The purchase  price for the
Shares shall be $__________, as required by the Option Agreement.

         2. Delivery of Payment.  Purchaser herewith delivers to the Company the
full purchase price for the Shares.

         3. Representations of Purchaser.  Purchaser acknowledges that Purchaser
has received,  read and understood the Plan and the Option  Agreement and agrees
to abide by and be bound by their terms and conditions.

         4. Rights as  Shareholder.  Until the  issuance  (as  evidenced  by the
appropriate  entry on the books of the Company or of a duly authorized  transfer
agent of the Company) of the stock certificate  evidencing such Shares, no right
to vote or receive  dividends or any other rights as a  shareholder  shall exist
with respect to the Optioned Stock,  notwithstanding the exercise of the Option.
A share  certificate for the number of Shares so acquired shall be issued to the
Optionee as soon as practicable after exercise of the Option. No adjustment will
be made for a dividend  or other right for which the record date is prior to the
date the stock  certificate  is issued,  except as provided in Section 13 of the
Plan.

         5. Tax  Consultation.  Purchaser  understands that Purchaser may suffer
adverse tax  consequences as a result of Purchaser's  purchase or disposition of
the Shares.  Purchaser  represents  that  Purchaser has  consulted  with any tax
consultants  Purchaser  deems  advisable  in  connection  with the  purchase  or
disposition  of the Shares and that  Purchaser is not relying on the Company for
any tax advice.

         6. Entire  Agreement;  Governing Law. The Plan and Option Agreement are
incorporated  herein  by  reference.  This  Agreement,  the Plan and the  Option
Agreement  constitute  the entire  agreement  of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements  of the  Company and  Purchaser  with  respect to the subject  matter

<PAGE>

hereof, and may not be modified adversely to the Purchaser's  interest except by
means of a writing  signed by the  Company  and  Purchaser.  This  agreement  is
governed by California law except for that body of law pertaining to conflict of
laws.


Submitted by:                               Accepted by:

PURCHASER:                                  SIERRA MONITOR CORPORATION


__________________________________  By: _________________________________
Signature

__________________________________  Its: ________________________________
Print Name


Address:                            Address:
- --------                            --------

___________________________         1991 Tarob Court
___________________________         Milpitas, CA 95035



                                      -2-
<PAGE>


                                    EXHIBIT B

                               SECURITY AGREEMENT



        This Security  Agreement is made as of __________,  19___ between Sierra
Monitor    Corporation,    a    California    corporation    ("Pledgee"),    and
_________________________ ("Pledgor").


                                    Recitals

        Pursuant  to  Pledgor's  election to  purchase  Shares  under the Option
Agreement  dated  ________  (the  "Option"),  between  Pledgor and Pledgee under
Pledgee's 1996 Stock Plan, and Pledgor's  election under the terms of the Option
to pay for such  shares  with his  promissory  note (the  "Note"),  Pledgor  has
purchased  _________  shares of Pledgee's Common Stock (the "Shares") at a price
of $________ per share, for a total purchase price of $__________.  The Note and
the obligations thereunder are as set forth in Exhibit C to the Option.

        NOW, THEREFORE, it is agreed as follows:

        1. Creation and Description of Security  Interest.  In  consideration of
the  transfer  of the Shares to Pledgor  under the  Option  Agreement,  Pledgor,
pursuant to the California  Commercial  Code,  hereby pledges all of such Shares
(herein sometimes  referred to as the  "Collateral")  represented by certificate
number  ______,  duly  endorsed  in blank or with  executed  stock  powers,  and
herewith delivers said certificate to the Secretary of Pledgee ("Pledgeholder"),
who shall  hold said  certificate  subject to the terms and  conditions  of this
Security Agreement.

        The pledged stock (together with an executed blank stock  assignment for
use in  transferring  all or a portion of the Shares to Pledgee  if, as and when
required pursuant to this Security  Agreement) shall be held by the Pledgeholder
as  security  for the  repayment  of the Note,  and any  extensions  or renewals
thereof,  to be executed by Pledgor pursuant to the terms of the Option, and the
Pledgeholder  shall not encumber or dispose of such Shares  except in accordance
with the provisions of this Security Agreement.

         2. Pledgor's  Representations and Covenants. To induce Pledgee to enter
into this Security Agreement,  Pledgor represents and covenants to Pledgee,  its
successors and assigns, as follows:

               a. Payment of Indebtedness. Pledgor will pay the principal sum of
the Note secured hereby,  together with interest thereon, at the time and in the
manner provided in the Note.

               b. Encumbrances.  The Shares are free of all other  encumbrances,
defenses and liens, and Pledgor will not further encumber the Shares without the
prior written consent of Pledgee.


               c. Margin  Regulations.  In the event that Pledgee's Common Stock
is now or later

<PAGE>


becomes  margin-listed by the Federal Reserve Board and Pledgee is classified as
a "lender" within the meaning of the  regulations  under Part 207 of Title 12 of
the Code of Federal  Regulations  ("Regulation  G"), Pledgor agrees to cooperate
with Pledgee in making any  amendments to the Note or providing  any  additional
collateral as may be necessary to comply with such regulations.

         3.  Voting  Rights.  During the term of this  pledge and so long as all
payments of  principal  and interest are made as they become due under the terms
of the Note,  Pledgor  shall  have the right to vote all of the  Shares  pledged
hereunder.

         4. Stock  Adjustments.  In the event that during the term of the pledge
any stock dividend, reclassification, readjustment or other changes are declared
or made in the capital structure of Pledgee, all new, substituted and additional
shares  or  other  securities  issued  by  reason  of any such  change  shall be
delivered to and held by the Pledgee under the terms of this Security  Agreement
in the same manner as the Shares originally pledged  hereunder.  In the event of
substitution  of  such  securities,  Pledgor,  Pledgee  and  Pledgeholder  shall
cooperate and execute such  documents as are reasonable so as to provide for the
substitution  of such  Collateral  and,  upon such  substitution,  references to
"Shares" in this  Security  Agreement  shall include the  substituted  shares of
capital stock of Pledgor as a result thereof.

         5.  Options  and  Rights.  In the event  that,  during the term of this
pledge,  subscription  Options  or other  rights or  options  shall be issued in
connection  with the pledged Shares,  such rights,  Options and options shall be
the property of Pledgor  and, if  exercised  by Pledgor,  all new stock or other
securities so acquired by Pledgor as it relates to the pledged  Shares then held
by Pledgeholder shall be immediately delivered to Pledgeholder, to be held under
the terms of this Security Agreement in the same manner as the Shares pledged.

         6. Default. Pledgor shall be deemed to be in default of the Note and of
this Security Agreement in the event:

               a.  Payment  of  principal  or  interest  on the  Note  shall  be
delinquent for a period of 10 days or more; or

               b. Pledgor fails to perform any of the covenants set forth in the
Option or contained  in this  Security  Agreement  for a period of 10 days after
written notice thereof from Pledgee.

        In the case of an event of Default,  as set forth above,  Pledgee  shall
have the right to  accelerate  payment of the Note upon notice to  Pledgor,  and
Pledgee shall thereafter be entitled to pursue its remedies under the California
Commercial Code.

         7. Release of  Collateral.  Subject to any  applicable  contrary  rules
under  Regulation  G, there shall be released  from this pledge a portion of the
pledged Shares held by Pledgeholder  hereunder upon payments of the principal of
the Note. The number of the pledged Shares which shall be released shall be that
number of full Shares which bears the same  proportion to the initial  number of

                                      -2-
<PAGE>

Shares pledged  hereunder as the payment of principal  bears to the initial full
principal amount of the Note.

         8. Withdrawal or  Substitution  of Collateral.  Pledgor shall not sell,
withdraw,  pledge,  substitute  or  otherwise  dispose of all or any part of the
Collateral without the prior written consent of Pledgee.

         9. Term.  The within pledge of Shares shall  continue until the payment
of all indebtedness  secured hereby,  at which time the remaining  pledged stock
shall be promptly  delivered  to Pledgor,  subject to the  provisions  for prior
release of a portion of the Collateral as provided in paragraph 7 above.

         10.  Insolvency.  Pledgor  agrees that if a  bankruptcy  or  insolvency
proceeding is instituted by or against it, or if a receiver is appointed for the
property  of  Pledgor,  or if Pledgor  makes an  assignment  for the  benefit of
creditors, the entire amount unpaid on the Note shall become immediately due and
payable, and Pledgee may proceed as provided in the case of default.

         11.  Pledgeholder  Liability.  In  the  absence  of  willful  or  gross
negligence,  Pledgeholder  shall not be liable to any party for any of his acts,
or omissions to act, as Pledgeholder.

         12. Invalidity of Particular Provisions. Pledgor and Pledgee agree that
the enforceability or invalidity of any provision or provisions of this Security
Agreement  shall not render any other provision or provisions  herein  contained
unenforceable or invalid.

         13.  Successors  or Assigns.  Pledgor and Pledgee agree that all of the
terms of this Security Agreement shall be binding on their respective successors
and assigns,  and that the term  "Pledgor" and the term "Pledgee" as used herein
shall  be  deemed  to  include,  for all  purposes,  the  respective  designees,
successors, assigns, heirs, executors and administrators.

         14.  Governing Law. This Security  Agreement  shall be interpreted  and
governed under the laws of the State of California.


                                      -3-

<PAGE>


        IN WITNESS  WHEREOF,  the parties hereto have executed this Agreement as
of the day and year first above written.



        "PLEDGOR"                     By:
                                         -------------------------------------

                                      ----------------------------------------
                                      Print Name

                                      ----------------------------------------
                                      Address:






        "PLEDGEE"                     Sierra Monitor Corporation,
                                               a California corporation


                                      By:
                                         -------------------------------------

                                      ----------------------------------------
                                      Title:


        "PLEDGEHOLDER"
                                      ----------------------------------------
                                      Secretary of Sierra Monitor Corporation


                                      -4-
<PAGE>


                                    EXHIBIT C

                                      NOTE


$_______________                                            Milpitas, California

                                                           ______________, 19___


        FOR VALUE  RECEIVED,  _______________  promises to pay to Sierra Monitor
Corporation,  a California corporation (the "Company"),  or order, the principal
sum of _______________________  ($_____________),  together with interest on the
unpaid  principal  hereof  from the date  hereof at the rate of  _______________
percent (____%) per annum, compounded semiannually.

        Principal and interest  shall be due and payable on  __________,  19___.
Should the undersigned  fail to make full payment of principal or interest for a
period of 10 days or more after the due date thereof,  the whole unpaid  balance
on this Note of principal  and  interest  shall  become  immediately  due at the
option of the holder of this Note.  Payments of principal and interest  shall be
made in lawful money of the United States of America.

        The  undersigned  may at any  time  prepay  all  or any  portion  of the
principal or interest owing hereunder.

        This  Note  is  subject  to  the  terms  of  the  Option,  dated  as  of
________________.  This Note is  secured  in part by a pledge  of the  Company's
Common Stock under the terms of a Security  Agreement of even date  herewith and
is subject to all the provisions thereof.

        The  holder  of  this  Note  shall  have  full   recourse   against  the
undersigned,  and  shall not be  required  to  proceed  against  the  collateral
securing this Note in the event of default.

        In the event the undersigned shall cease to be an employee or consultant
of the Company for any reason, this Note shall, at the option of the Company, be
accelerated,  and the whole unpaid balance on this Note of principal and accrued
interest shall be immediately due and payable.

        Should any action be instituted  for the  collection  of this Note,  the
reasonable  costs and attorneys' fees therein of the holder shall be paid by the
undersigned.


                                            ------------------------------------

                                            ------------------------------------


<PAGE>


                                 1996 STOCK PLAN

                     NOTICE OF GRANT OF STOCK PURCHASE RIGHT


        Unless  otherwise  defined  herein,  the terms defined in the Plan shall
have the same defined meanings in this Notice of Grant.

[Grantee's Name and Address]

        You have been granted the right to purchase Common Stock of the Company,
subject to the Company's Repurchase Option and your ongoing Continuous Status as
an Employee or Consultant (as described in the Plan and the attached  Restricted
Stock Purchase Agreement), as follows:

        Grant Number                        _________________________

        Date of Grant                       _________________________

        Price Per Share                     $________________________

        Total Number of Shares Subject      _________________________
          to This Stock Purchase Right

        Expiration Date:                    _________________________


        YOU MUST EXERCISE THIS STOCK PURCHASE  RIGHT BEFORE THE EXPIRATION  DATE
OR IT WILL  TERMINATE AND YOU WILL HAVE NO FURTHER RIGHT TO PURCHASE THE SHARES.
By your signature and the signature of the Company's  representative  below, you
and the  Company  agree that this  Stock  Purchase  Right is  granted  under and
governed by the terms and  conditions of the 1996 Stock Plan and the  Restricted
Stock Purchase Agreement, attached hereto as Exhibit A-1, both of which are made
a part of this  document.  You further agree to execute the attached  Restricted
Stock  Purchase  Agreement  as a condition to  purchasing  any shares under this
Stock Purchase Right.

GRANTEE:                                    SIERRA MONITOR CORPORATION


___________________________                 By:      ___________________________
Signature

___________________________                 Title:  ___________________________
Print Name

                                  EXHIBIT A-1

<PAGE>


                                 1996 STOCK PLAN

                       RESTRICTED STOCK PURCHASE AGREEMENT

        Unless  otherwise  defined  herein,  the terms defined in the Plan shall
have the same defined meanings in this Restricted Stock Purchase Agreement.

        WHEREAS the Purchaser named in the Notice of Grant, (the "Purchaser") is
an  Employee  or  Consultant  of the  Company,  and  the  Purchaser's  continued
participation  is  considered  by the Company to be important  for the Company's
continued growth; and

        WHEREAS  in order to give the  Purchaser  an  opportunity  to acquire an
equity  interest in the Company as an incentive for the Purchaser to participate
in the affairs of the Company,  the Administrator has granted to the Purchaser a
Stock  Purchase  Right  subject to the terms and  conditions of the Plan and the
Notice of Grant,  which are  incorporated  herein by reference,  and pursuant to
this Restricted Stock Purchase Agreement (the "Agreement").

        NOW THEREFORE, the parties agree as follows:

        1. Sale of Stock. The Company hereby agrees to sell to the Purchaser and
the  Purchaser  hereby agrees to purchase  shares of the Company's  Common Stock
(the  "Shares"),  at the per Share purchase price and as otherwise  described in
the Notice of Grant.

        2. Payment of Purchase  Price.  The purchase price for the Shares may be
paid by delivery to the Company at the time of  execution  of this  Agreement of
cash, a check, or some combination thereof.

        3. Repurchase Option.

               (a) In the event the Purchaser's Continuous Status as an Employee
or Consultant  terminates for any or no reason  (including  death or disability)
before all of the Shares are released from the Company's  Repurchase Option (see
Section 4), the Company shall,  upon the date of such termination (as reasonably
fixed and determined by the Company) have an irrevocable,  exclusive option (the
"Repurchase  Option")  for a  period  of  sixty  (60)  days  from  such  date to
repurchase up to that number of shares which  constitute the  Unreleased  Shares
(as  defined  in  Section  4) at the  original  purchase  price per  share  (the
"Repurchase  Price"). The Repurchase Option shall be exercised by the Company by
delivering  written notice to the Purchaser or the Purchaser's  executor (with a
copy to the Escrow  Holder) AND, at the Company's  option,  (i) by delivering to
the Purchaser or the Purchaser's executor a check in the amount of the aggregate
Repurchase   Price,   or  (ii)  by  cancelling  an  amount  of  the  Purchaser's
indebtedness to the Company equal to the aggregate Repurchase Price, or (iii) by
a combination of (i) and (ii) so that the combined  payment and  cancellation of
indebtedness equals the aggregate Repurchase Price. Upon delivery of such notice
and the payment of the aggregate  Repurchase Price, the Company shall become the
legal and beneficial  owner of the Shares being  repurchased  and all rights and
interests therein or relating  thereto,  and the Company shall have the 

<PAGE>

right to  retain  and  transfer  to its own  name the  number  of  Shares  being
repurchased by the Company.

               (b)  Whenever  the  Company  shall  have the right to  repurchase
Shares  hereunder,  the Company may designate and assign one or more  employees,
officers,  directors  or  shareholders  of  the  Company  or  other  persons  or
organizations  to exercise all or a part of the Company's  purchase rights under
this  Agreement  and purchase  all or a part of such Shares.  If the Fair Market
Value  of the  Shares  to be  repurchased  on the  date of such  designation  or
assignment (the "Repurchase FMV") exceeds the aggregate Repurchase Price of such
Shares,  then each such designee or assignee shall pay the Company cash equal to
the difference between the Repurchase FMV and the aggregate  Repurchase Price of
such Shares.

        4.     Release of Shares From Repurchase Option.

               (a) _______________________ percent (______%) of the Shares shall
be  released  from the  Company's  Repurchase  Option one year after the Date of
Grant and __________________  percent (______%) of the Shares at the end of each
month thereafter, provided that the Purchaser's Continuous Status as an Employee
or Consultant has not terminated prior to the date of any such release.

               (b) Any of the Shares  that have not yet been  released  from the
Repurchase Option are referred to herein as "Unreleased Shares."

               (c) The Shares that have been released from the Repurchase Option
shall be delivered to the Purchaser at the Purchaser's request (see Section 6).

        5. Restriction on Transfer. Except for the escrow described in Section 6
or the transfer of the Shares to the Company or its  assignees  contemplated  by
this Agreement,  none of the Shares or any beneficial  interest therein shall be
transferred,  encumbered  or otherwise  disposed of in any way until such Shares
are  released  from the  Company's  Repurchase  Option  in  accordance  with the
provisions  of this  Agreement,  other than by will or the laws of  descent  and
distribution.

        6.     Escrow of Shares.

               (a) To ensure the  availability  for delivery of the  Purchaser's
Unreleased  Shares upon  repurchase  by the Company  pursuant to the  Repurchase
Option,  the Purchaser  shall,  upon  execution of this  Agreement,  deliver and
deposit with an escrow holder  designated  by the Company (the "Escrow  Holder")
the share  certificates  representing the Unreleased  Shares,  together with the
stock  assignment  duly endorsed in blank,  attached  hereto as Exhibit A-2. The
Unreleased  Shares  and stock  assignment  shall be held by the  Escrow  Holder,
pursuant to the Joint Escrow  Instructions of the Company and Purchaser attached
hereto as  Exhibit  A-3,  until  such time as the  Company's  Repurchase  Option
expires.  As a  further  condition  to  the  Company's  obligations  under  this
Agreement,  the Company may require the spouse of Purchaser,  if any, to execute
and deliver to the Company the Consent of Spouse attached hereto as Exhibit A-4.

                                      -3-
<PAGE>

               (b) The Escrow  Holder  shall not be liable for any act it may do
or omit to do with  respect to holding  the  Unreleased  Shares in escrow  while
acting in good faith and in the exercise of its judgment.

               (c) If the  Company  or any  assignee  exercises  the  Repurchase
Option  hereunder,  the Escrow  Holder,  upon receipt of written  notice of such
exercise  from the  proposed  transferee,  shall  take all  steps  necessary  to
accomplish such transfer.

               (d) When the  Repurchase  Option  has been  exercised  or expires
unexercised  or a portion of the Shares has been  released  from the  Repurchase
Option, upon request the Escrow Holder shall promptly cause a new certificate to
be issued for the  released  Shares and shall  deliver  the  certificate  to the
Company or the Purchaser, as the case may be.

               (e) Subject to the terms hereof, the Purchaser shall have all the
rights of a  shareholder  with  respect  to the  Shares  while  they are held in
escrow,  including  without  limitation,  the  right to vote the  Shares  and to
receive any cash dividends  declared  thereon.  If, from time to time during the
term of the Repurchase Option,  there is (i) any stock dividend,  stock split or
other change in the Shares,  or (ii) any merger or sale of all or  substantially
all of the  assets  or  other  acquisition  of the  Company,  any and  all  new,
substituted  or  additional  securities  to which the  Purchaser  is entitled by
reason of the Purchaser's  ownership of the Shares shall be immediately  subject
to this escrow,  deposited  with the Escrow  Holder and included  thereafter  as
"Shares" for purposes of this Agreement and the Repurchase Option.

         7.  Legends.  The  share  certificate   evidencing  the  Shares  issued
hereunder shall be endorsed with the following legend (in addition to any legend
required under applicable state securities laws):

        THE  SHARES  REPRESENTED  BY THIS  CERTIFICATE  ARE  SUBJECT  TO CERTAIN
RESTRICTIONS UPON TRANSFER AND RIGHTS OF REPURCHASE AS SET FORTH IN AN AGREEMENT
BETWEEN  THE COMPANY  AND THE  SHAREHOLDER,  A COPY OF WHICH IS ON FILE WITH THE
SECRETARY OF THE COMPANY.

        8.  Adjustment  for Stock Split.  All references to the number of Shares
and the purchase  price of the Shares in this Agreement  shall be  appropriately
adjusted  to reflect any stock  split,  stock  dividend  or other  change in the
Shares which may be made by the Company after the date of this Agreement.

        9. Tax Consequences. The Purchaser has reviewed with the Purchaser's own
tax advisors  the federal,  state,  local and foreign tax  consequences  of this
investment and the transactions contemplated by this Agreement. The Purchaser is
relying solely on such advisors and not on any statements or  representations of
the Company or any of its agents.  The Purchaser  understands that the Purchaser
(and not the Company) shall be responsible for the Purchaser's own tax liability
that may arise as a result of the  transactions  contemplated by this Agreement.
The Purchaser  understands that Section 83

                                      -4-

<PAGE>

of the Internal Revenue Code of 1986, as amended (the "Code"), taxes as ordinary
income the  difference  between the  purchase  price for the Shares and the Fair
Market Value of the Shares as of the date any  restrictions on the Shares lapse.
In this context, "restriction" includes the right of the Company to buy back the
Shares pursuant to the Repurchase  Option.  The Purchaser  understands  that the
Purchaser may elect to be taxed at the time the Shares are purchased rather than
when and as the  Repurchase  Option  expires by filing an election under Section
83(b) of the Code with the IRS  within 30 days  from the date of  purchase.  The
form for making this election is attached as Exhibit A-5 hereto.

               THE  PURCHASER  ACKNOWLEDGES  THAT  IT IS  THE  PURCHASER'S  SOLE
RESPONSIBILITY  AND NOT THE COMPANY'S TO FILE TIMELY THE ELECTION  UNDER SECTION
83(b), EVEN IF THE PURCHASER REQUESTS THE COMPANY OR ITS REPRESENTATIVES TO MAKE
THIS FILING ON THE PURCHASER'S BEHALF.

        10.    General Provisions.

               (a) This Agreement  shall be governed by the laws of the State of
California. This Agreement,  subject to the terms and conditions of the Plan and
the Notice of Grant,  represents the entire  agreement  between the parties with
respect to the purchase of the Shares by the Purchaser. Subject to Section 15(c)
of the Plan, in the event of a conflict  between the terms and conditions of the
Plan and the terms and conditions of this Agreement, the terms and conditions of
the Plan shall prevail.  Unless otherwise  defined herein,  the terms defined in
the Plan shall have the same defined meanings in this Agreement.

               (b) Any notice,  demand or request  required or  permitted  to be
given by either  the  Company  or the  Purchaser  pursuant  to the terms of this
Agreement  shall  be in  writing  and  shall  be  deemed  given  when  delivered
personally or deposited in the U.S. mail, First Class with postage prepaid,  and
addressed to the parties at the addresses of the parties set forth at the end of
this  Agreement or such other  address as a party may request by  notifying  the
other in writing.

               Any notice to the Escrow  Holder  shall be sent to the  Company's
address with a copy to the other party hereto.

               (c) The  rights of the  Company  under  this  Agreement  shall be
transferable  to any one or more  persons or  entities,  and all  covenants  and
agreements  hereunder  shall inure to the benefit of, and be  enforceable by the
Company's  successors and assigns.  The rights and  obligations of the Purchaser
under this Agreement may only be assigned with the prior written  consent of the
Company.

               (d)  Either  party's  failure to enforce  any  provision  of this
Agreement  shall not in any way be construed as a waiver of any such  provision,
nor prevent that party from  thereafter  enforcing  any other  provision of this
Agreement.  The rights  granted both parties  hereunder are cumulative and shall
not constitute a waiver of either party's right to assert any other legal remedy
available to it.

                                      -5-

<PAGE>

               (e) The  Purchaser  agrees  upon  request to execute  any further
documents  or  instruments  necessary  or desirable to carry out the purposes or
intent of this Agreement.

               (f) PURCHASER  ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES
PURSUANT TO SECTION 4 HEREOF IS EARNED ONLY BY CONTINUING SERVICE AS AN EMPLOYEE
OR CONSULTANT AT THE WILL OF THE COMPANY (AND NOT THROUGH THE ACT OF BEING HIRED
OR PURCHASING SHARES HEREUNDER).  PURCHASER FURTHER ACKNOWLEDGES AND AGREES THAT
THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE
SET FORTH HEREIN DO NOT  CONSTITUTE  AN EXPRESS OR IMPLIED  PROMISE OF CONTINUED
ENGAGEMENT AS AN EMPLOYEE OR CONSULTANT FOR THE VESTING PERIOD,  FOR ANY PERIOD,
OR AT ALL, AND SHALL NOT INTERFERE WITH PURCHASER'S RIGHT OR THE COMPANY'S RIGHT
TO TERMINATE PURCHASER'S EMPLOYMENT OR CONSULTING RELATIONSHIP AT ANY TIME, WITH
OR WITHOUT CAUSE.

        By Purchaser's  signature below,  Purchaser represents that he or she is
familiar  with the terms and  provisions  of the Plan,  and hereby  accepts this
Agreement  subject to all of the terms and  provisions  thereof.  Purchaser  has
reviewed the Plan and this Agreement in their  entirety,  has had an opportunity
to obtain the advice of counsel  prior to  executing  this  Agreement  and fully
understands  all  provisions of this  Agreement.  Purchaser  agrees to accept as
binding,   conclusive  and  final  all  decisions  or   interpretations  of  the
Administrator  upon any  questions  arising  under  the Plan or this  Agreement.
Purchaser  further agrees to notify the Company upon any change in the residence
indicated in the Notice of Grant.

DATED:  _____________________

PURCHASER:                          SIERRA MONITOR CORPORATION
______________________________      By:____________________________
Signature
______________________________      Title:___________________________
Print Name


                                      -6-

<PAGE>


                                   EXHIBIT A-2

                      ASSIGNMENT SEPARATE FROM CERTIFICATE



         FOR VALUE RECEIVED I,  _________________________,  hereby sell,  assign
and transfer  unto  (__________)  shares of the Common  Stock of Sierra  Monitor
Corporation standing in my name of the books of said corporation  represented by
Certificate No. _____ herewith and do hereby irrevocably  constitute and appoint
to transfer  the said stock on the books of the within  named  corporation  with
full power of substitution in the premises.

         This  Stock  Assignment  may  be  used  only  in  accordance  with  the
Restricted    Stock    Purchase    Agreement    (the    "Agreement")     between
________________________ and the undersigned dated ______________, 19__.


Dated: _______________, 19


                                    Signature:______________________________




INSTRUCTIONS:  Please do not fill in any blanks other than the  signature  line.
The  purpose  of this  assignment  is to enable  the  Company  to  exercise  the
Repurchase Option, as set forth in the Agreement,  without requiring  additional
signatures on the part of the Purchaser.


<PAGE>





                                   EXHIBIT A-3

                            JOINT ESCROW INSTRUCTIONS


                                                               ___________, 19__

Corporate Secretary
Sierra Monitor Corporation
1991 Tarob Court
Milpitas, CA 95035

Dear                  :

        As Escrow  Agent  for both  Sierra  Monitor  Corporation,  a  California
corporation  (the  "Company"),  and the  undersigned  purchaser  of stock of the
Company (the  "Purchaser"),  you are hereby  authorized and directed to hold the
documents  delivered  to you  pursuant to the terms of that  certain  Restricted
Stock Purchase Agreement  ("Agreement") between the Company and the undersigned,
in accordance with the following instructions:

        1. In the event the Company and/or any assignee of the Company (referred
to collectively as the "Company")  exercises the Company's Repurchase Option set
forth in the  Agreement,  the Company  shall give to Purchaser and you a written
notice  specifying  the number of shares of stock to be purchased,  the purchase
price,  and the time for a  closing  hereunder  at the  principal  office of the
Company.  Purchaser and the Company hereby irrevocably  authorize and direct you
to close the  transaction  contemplated  by such notice in  accordance  with the
terms of said notice.

        2. At the closing,  you are  directed (a) to date the stock  assignments
necessary  for the  transfer  in  question,  (b) to fill in the number of shares
being  transferred,  and (c) to  deliver  same,  together  with the  certificate
evidencing  the  shares  of  stock  to be  transferred,  to the  Company  or its
assignee,  against the  simultaneous  delivery to you of the purchase  price (by
cash, a check,  or some  combination  thereof) for the number of shares of stock
being purchased pursuant to the exercise of the Company's Repurchase Option.

        3. Purchaser irrevocably  authorizes the Company to deposit with you any
certificates  evidencing  shares  of stock to be held by you  hereunder  and any
additions  and  substitutions  to  said  shares  as  defined  in the  Agreement.
Purchaser  does hereby  irrevocably  constitute  and appoint you as  Purchaser's
attorney-in-fact  and agent for the term of this escrow to execute  with respect
to  such  securities  all  documents  necessary  or  appropriate  to  make  such
securities  negotiable  and to complete  any  transaction  herein  contemplated,
including  but not  limited to the  filing  with any  applicable  state blue sky
authority of any required applications for consent to, or notice of transfer of,
the  securities.  Subject to the provisions of this paragraph 3, Purchaser shall
exercise all rights and  privileges  of a  shareholder  of the Company while the
stock is held by you.

        4. Upon  written  request  of the  Purchaser,  but no more than once per
calendar year, unless 

<PAGE>


the  Company's  Repurchase  Option  has been  exercised,  you shall  deliver  to
Purchaser a certificate or certificates  representing so many shares of stock as
are not then subject to the Company's  Repurchase  Option.  Within 90 days after
cessation of Purchaser's continuous employment by or services to the Company, or
any parent or  subsidiary  of the  Company,  you shall  deliver to  Purchaser  a
certificate or certificates  representing the aggregate number of shares held or
issued  pursuant  to the  Agreement  and not  purchased  by the  Company  or its
assignees pursuant to exercise of the Company's Repurchase Option.

        5. If at the time of  termination of this escrow you should have in your
possession any documents,  securities, or other property belonging to Purchaser,
you shall  deliver all of the same to Purchaser  and shall be  discharged of all
further obligations hereunder.

         6. Your duties hereunder may be altered,  amended,  modified or revoked
only by a writing signed by all of the parties hereto.

        7. You shall be obligated only for the performance of such duties as are
specifically  set forth herein and may rely and shall be protected in relying or
refraining  from  acting  on any  instrument  reasonably  believed  by you to be
genuine and to have been signed or presented by the proper party or parties. You
shall not be personally liable for any act you may do or omit to do hereunder as
Escrow Agent or as  attorney-in-fact  for Purchaser  while acting in good faith,
and any act done or omitted by you pursuant to the advice of your own  attorneys
shall be conclusive evidence of such good faith.

        8. You are hereby expressly authorized to disregard any and all warnings
given by any of the  parties  hereto  or by any  other  person  or  corporation,
excepting  only  orders or  process of courts of law,  and are hereby  expressly
authorized to comply with and obey orders, judgments or decrees of any court. In
case you obey or comply with any such order,  judgment or decree,  you shall not
be  liable  to  any of the  parties  hereto  or to any  other  person,  firm  or
corporation  by  reason  of such  compliance,  notwithstanding  any such  order,
judgment or decree being subsequently reversed,  modified,  annulled, set aside,
vacated or found to have been entered without jurisdiction.

        9. You shall not be liable in any  respect on  account of the  identity,
authorities  or rights of the parties  executing or  delivering or purporting to
execute or deliver the Agreement or any documents or papers  deposited or called
for hereunder.

        10. You shall not be liable for the  outlawing  of any rights  under the
statute of limitations  with respect to these Joint Escrow  Instructions  or any
documents deposited with you.

        11. You shall be entitled to employ such legal counsel and other experts
as you may deem  necessary  properly  to  advise  you in  connection  with  your
obligations  hereunder,  may rely upon the advice of such  counsel,  and may pay
such counsel reasonable compensation therefor.

        12. Your  responsibilities  as Escrow Agent hereunder shall terminate if
you shall cease to be an officer or agent of the Company or if you shall  resign
by  written  notice to each  party.  In the event

                                      -2-
<PAGE>

of any such termination, the Company shall appoint a successor Escrow Agent.

        13. If you reasonably require other or further instruments in connection
with these Joint Escrow  Instructions  or  obligations  in respect  hereto,  the
necessary parties hereto shall join in furnishing such instruments.

        14. It is  understood  and agreed  that  should any  dispute  arise with
respect  to  the  delivery  and/or  ownership  or  right  of  possession  of the
securities  held by you hereunder,  you are authorized and directed to retain in
your possession  without  liability to anyone all or any part of said securities
until such disputes shall have been settled  either by mutual written  agreement
of the parties  concerned or by a final order,  decree or judgment of a court of
competent  jurisdiction  after the time for appeal has expired and no appeal has
been perfected, but you shall be under no duty whatsoever to institute or defend
any such proceedings.

        15. Any notice required or permitted hereunder shall be given in writing
and shall be deemed  effectively given upon personal delivery or upon deposit in
the United States Post Office,  by registered or certified mail with postage and
fees prepaid,  addressed to each of the other parties thereunto  entitled at the
following  addresses or at such other  addresses as a party may designate by ten
days' advance written notice to each of the other parties hereto.


               COMPANY:                     Sierra Monitor Corporation
                                            1991 Tarob Court
                                            Milpitas, CA  95035

               PURCHASER:
                                            ________________________________

                                            ________________________________

                                            ________________________________

               ESCROW AGENT:                Corporate Secretary
                                            Sierra Monitor Corporation
                                            1991 Tarob Court
                                            Milpitas, CA  95035

        16. By  signing  these  Joint  Escrow  Instructions,  you become a party
hereto only for the purpose of said Joint Escrow Instructions; you do not become
a party to the Agreement.

        17. This  instrument  shall be binding  upon and inure to the benefit of
the parties hereto, and their respective successors and permitted assigns.

        18. These Joint Escrow  Instructions shall be governed by, and construed
and enforced in 

                                      -3-


<PAGE>

accordance with, the laws of the State of California. Very truly yours,

                                          SIERRA MONITOR CORPORATION


                                 By:      _____________________________________


                                 Title: ______________________________________


                                          PURCHASER:

                                          -------------------------------------
                                                   (Signature)


                                          -------------------------------------
                                          (Typed or Printed Name)
ESCROW AGENT:


- -------------------------------------
Corporate Secretary

                                      -4-
<PAGE>

                                   EXHIBIT A-4

                                CONSENT OF SPOUSE


        I,  ____________________,  spouse of ___________________,  have read and
approve the foregoing Restricted Stock Purchase Agreement (the "Agreement").  In
consideration  of the  Company's  grant to my spouse  of the  right to  purchase
shares of Sierra Monitor  Corporation,  as set forth in the Agreement,  I hereby
appoint  my spouse as my  attorney-in-fact  in respect  to the  exercise  of any
rights  under  the  Agreement  and  agree to be bound by the  provisions  of the
Agreement  insofar  as I may have any  rights in said  Agreement  or any  shares
issued  pursuant  thereto  under the  community  property  laws or similar  laws
relating to marital  property in effect in the state of our  residence as of the
date of the signing of the foregoing Agreement.

Dated: _______________, 19


                               ------------------------------------------
                               Signature of Spouse




<PAGE>





                                   EXHIBIT A-5
                          ELECTION UNDER SECTION 83(b)
                      OF THE INTERNAL REVENUE CODE OF 1986


The  undersigned  taxpayer  hereby  elects,  pursuant  to  Section  83(b) of the
Internal Revenue Code of 1986, as amended, to include in taxpayer's gross income
for the current taxable year the amount of any compensation  taxable to taxpayer
in connection with his or her receipt of the property described below:

1.      The name, address,  taxpayer  identification  number and taxable year of
        the undersigned are as follows:

        NAME:                  TAXPAYER:                   SPOUSE:

        ADDRESS:

        IDENTIFICATION NO.:     TAXPAYER:                  SPOUSE:

        TAXABLE YEAR:

2.      The property  with respect to which the election is made is described as
        follows:  shares (the  "Shares") of the Common  Stock of Sierra  Monitor
        Corporation (the "Company").

3.      The date on which the property was transferred is:_______________, 19__.

4.      The property is subject to the following restrictions:

        The Shares may be  repurchased  by the Company,  or its  assignee,  upon
        certain events. This right lapses with regard to a portion of the Shares
        based on the  continued  performance  of services by the  taxpayer  over
        time.

5.      The fair market value at the time of transfer, determined without regard
        to any  restriction  other  than a  restriction  which by its terms will
        never lapse, of such property is:
        $_______________.
                        

6.      The amount (if any) paid for such property is:
        $_______________.

The  undersigned  has submitted a copy of this  statement to the person for whom
the services were performed in connection with the undersigned's  receipt of the
above-described  property.  The  transferee  of  such  property  is  the  person
performing the services in connection with the transfer of said property.

The  undersigned  understands  that the  foregoing  election  may not be revoked
except with the consent of the Commissioner.

Dated:  _______________, 19____  _______________________________________________
                                                    Taxpayer

The undersigned spouse of taxpayer joins in this election.

Dated:  _______________, 19____  _______________________________________________
                                              Spouse of Taxpayer





                                                                     EXHIBIT 5.1


                                December 18, 1996


SIERRA MONITOR CORPORATION
1991 Tarob Court
Milpitas, CA  95035


      RE:  REGISTRATION STATEMENT ON FORM S-8

Ladies and Gentlemen:

      We have examined the Registration Statement on Form S-8 to be filed by you
with the Securities  and Exchange  Commission on or about December 20, 1996 (the
"Registration  Statement"),  in  connection  with  the  registration  under  the
Securities  Act of 1933,  as amended,  of 600,000  shares of your  Common  Stock
reserved  for  issuance  under the 1996 Stock Plan (the  "Plan").  As your legal
counsel,  we have  examined  the  proceedings  taken and proposed to be taken in
connection with the issuance,  sale, and payment of consideration for the shares
to be issued under the Plan.

      It is our opinion that,  when issued and sold in the manner referred to in
the Plan and pursuant to the  agreements  which  accompany the Plan,  the shares
will be legally and validly issued, fully paid, and non-assessable.

      We  consent to the use of this  opinion as an exhibit to the  Registration
Statement and further consent to the use of our name wherever  appearing in such
Registration Statement and any amendments thereto.

                                Very truly yours,

                                WILSON SONSINI GOODRICH & ROSATI
                                Professional Corporation


                                By:    /s/ AARON J. ALTER
                                    ---------------------------
                                      Aaron J. Alter





                                                                    EXHIBIT 23.1


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


The Board of Directors and Shareholders
Sierra Monitor Corporation:


We consent to incorporation  by reference in the registration  statement on Form
S-8 of Sierra  Monitor  Corporation  of our  report  dated  February  23,  1996,
relating to the balance sheets of Sierra Monitor  Corporation as of December 31,
1995 and 1994, and the related statements of operations,  shareholders'  equity,
and cash flows for each of the years in the three-year period ended December 31,
1995,  and the related  schedule,  which report appears in the December 31, 1995
annual report on Form 10-K of Sierra Monitor Corporation.


/s/ KPMG PEAT MARWICK LLP
- ----------------------------
KPMG Peat Marwick LLP

San Jose, California
December 18, 1996



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