Description:
Brand new.
Material: plastic
Receiver size: about 235*35mm
Emitter size: about 145*35mm
Frequency signal: 1.5kHz
Receive frequency range: 100-300kHZ
Power supply: 2 x 9V batteries (not included)

Feature:
Designed to identify and trace wires or cables within a group without damaging the insulation.
For telephone line, it can identify some states in the line, and can help to install, debug, maintain telephone line.
Judge continuity of the cables or wires.
Track the cables or wires, and diagnose the break point.
Receive the tone signal on the cables or wires (telephone line).
Identify the state in the working telephone line (clear ring, busy).
Easy to use.
A professional & safe tool for wireman.

Package included:
1 x Sender
1 x Receiver

Note:
Please allow 1-2cm errors due to manual measurement.
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.