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Operates with periodic 12/16 kHz signal and
reversal.
9 digit LED display
Estimates the price of a call
Also gives the number of counters
Powered from the phone line,
Additional display
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Operates with periodic 12/16 kHz signal and
reversal.
6 digit LED display
Estimates the price of a call
Also gives the number of counters
Powered from the phone line,
Additional display
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