Detects dial tone and polarity, places and receives calls during testing of telephone lines
High impedance DataSafe operation in monitor mode
Tone (DTMF) and pulse operation
Last number redial
Polarity indication in talk mode
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Overview
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Detects dial tone and polarity, places and receives calls during testing of telephone lines High impedance DataSafe operation in monitor mode Tone (DTMF) and pulse operation Last number redial Polarity indication in talk mode
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First Listed on Newegg
February 09, 2026
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