165 CB is an ideal tool which can test the correct pin configuration for different kinds of cables: RJ45/RJ11, USB, COAX, BNC cable, Multi-wire cables. 165 CB provides a variety for checking cable continuity, open status, short status and miss-wired.
● Auto-scan and manual-check function.
● Buzzer sound warning for wire status.
● 2 LED module indicators on the master unit which can do both of transmitter and receiver functions for RJ45/RJ11 cable testing. Users don't need to use the receiving unit.
● Ground (shielded ) wire test.
● LED indication for wire status.
● Power source: 9V battery.

Amplifier Probe is designed to identify and trace wires or cables within a group without damaging the insulation.
● The flashlight function for easier cable tracing in the dark.
● An LED indication for the signal strength.
● Volume control for increased sensitivity and adjustable to suit work environment.
● Recessed ON/OFF button prevents battery drain.
● Works with any Tone Generator to identify wires.
● Power supply is in any 9V battery with a life of approximately 100 hours.
● A phone jack is designed for headset or handset.

Tone Generator is a great tool for locating and identifying cable pairs or individual conductors. 165 CB does not only serve as a tone generator, but it also serves as a continuity and polarity tester.
● Two bi-colored LEDs for Line1 and Line2 indication of the polarities of the telephone lines.
● Identifying Tip and Ring of telephone lines
● Identifying telephone line condition : Clear line, Busy line and Ringing line.
● Users can select a fast dual tone or a slow dual tone by the rotary switch.
● The unit has alligator type terminals, a modular cable of 4 conductors with a strong connector.
● The tone and continuity functions are only applied to Line1. (modular connector)