Digital Insulation Tester stores up to 1,000 test results.

Press Release Summary:

Suited for insulation resistance and AC/DC voltage and frequency measurements, portable GAO-21A conducts continuous measurements using either 200 or 7 mA test current. It features back-lit LCD display, RS-232 PC connector, double insulation protection to IP54, and insulation resistance to test voltages of 50-1,000 Vdc. Powered by 4 x 1.5 V AA battery with automatic turn-off, unit measures 252 x 142 x 162 mm, and has working temperature of -10 to 50°C at 85% RH.

Original Press Release:

GAO's Hand-Held Digital Insulation Tester Provides Quick and Easy Results

Toronto, Canada - GAO Tek Inc. ( recommends its portable digital insulation tester (GAO-21A). The hand-held, battery powered device testing cable integrity. Its ease of operation allows for quick standard wire tests for a quick review or storage within internal memory.

GAO's digital insulation tester performs particularly well in insulation resistance measurements and AC/DC voltage and frequency measurements. This powerful tester can conduct continuous measurements using either 200mA test current or 7mA test current.

GAO's Digital Insulation Tester provides the following features:

o Broad-range insulation resistant to test voltage ( 50V to 1000V DC)
o Test automatically discharged after completing a measurement
o Polarity shift of automatic voltage in &ldquo "continuity±200mA" function
o 7mA continuity function useful for inductive line testing
o Large data memory: capacity of storing up to 1000 testing results
o An easy-to-read, back-lit LCD display
o Double insulation protection IP54
o Power supply: 4×1.5V AA battery with automatic turn-off
o Memory function: Stores up to 1000 testing results
o PC connector: RS-232
o Dimensions: 252mm×142mm×162mm
o Working temperature: -10°C to 50°C 85%RH

For more information about this Digital Insulation Tester, please visit or contact

About GAO Tek Inc.

GAO Tek Inc. is a leading provider of test and measurement equipment, embedded development tools, telecommunication testers, electronic measurement instruments, video surveillance, alarm and other electronic products that serve the needs of electronic professionals internationally.

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