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Handheld Professional Telephone Line Tester

It features both low and high voltage warnings, an auto power off function and FSK/DTMF compatibility. It is equipped with a high resolution LCD screen to display line voltage and insulation test results. The tester provides a special durable test clamp and DTMF complying to GB/T15279-94. It is pocket sized and has simple operation making it easy to carry and convenient for field use.

Visit for more information or to purchase this product online.

For any sales inquires please contact:

1-877 585-9555 ext. 601 – Toll Free (USA & Canada)

1-416 292-0038 ext. 601 – All Other Areas

[email protected]

About GAO Tek Inc.

GAO Tek Inc. ( is a global leader in research,development and manufacturing of high performance telecommunication testers, electronic measurement instruments, embedded development tools and other electronic products that serve the needs of electronic professionals internationally.

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