weatherproof analogue test telephone

weatherproof analogue test telephone

All clearly arranged keys are available with DTMF selection, ie the special keys * / #. Switchable to pulse dialing with different pulse / pause ratios. The TP09D measures the line voltage and available current, display of caller ID, name and, if available, other customer information. Receipt and display of SMS and evaluation of DTMF in high-impedance monitor mode possible.