2 tools in 1
Telephone cable locator tester:
You can identify or locate telephone pairs through an acoustic and light signal
Headphone jack with volume control
Cable tester LAN networks:
You can identify RJ45 and RJ11 network cables by checking that the wiring is correct.
Other functions: Internal power supply battery test, handset, volume control, continuity check and / or open circuit.
Includes carrying case, accessories and 2 9V batteries