<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ISONET CORP
AND SUBSIDIARIES AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JUL-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 2,663
<SECURITIES> 0
<RECEIVABLES> 1,226
<ALLOWANCES> 0
<INVENTORY> 4,461
<CURRENT-ASSETS> 9,307
<PP&E> 2,645
<DEPRECIATION> 2,108
<TOTAL-ASSETS> 9,851
<CURRENT-LIABILITIES> 1,337
<BONDS> 0
0
0
<COMMON> 1,935
<OTHER-SE> 6,480
<TOTAL-LIABILITY-AND-EQUITY> 9,851
<SALES> 2,222
<TOTAL-REVENUES> 2,272
<CGS> 1,278
<TOTAL-COSTS> 1,627
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 8
<INCOME-PRETAX> 645
<INCOME-TAX> 49
<INCOME-CONTINUING> 596
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 596
<EPS-BASIC> .31
<EPS-DILUTED> .29
</TABLE>