Features: _x000D_ Can be used for: telecommunication engineer, wiring engineer and network maintenance engineer, etc. _x000D_ Suitable for directly hunting for cables with RJ45 connectors, telephone wires with RJ11 connectors. _x000D_ Cable sorting is a process of detecting physical connections in a cable like open circuit, short circuit, wrong circuit and reversed circuit. _x000D_ Use the emitter to detect line level or positive and negative electrode. _x000D_ Two ways to detect connected states of circuits. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Work Temperature:0~40,the maximum 80% relatively humidity (no coagulation)_x000D_ Storage Temperature:-10~50, the maximum 80% relatively humidity (no coagulation,no battery)_x000D_ Elevation: 2000 meters_x000D_ Type of Anti-explosion: IP 40_x000D_ Distance of Sending Signal: 3000 meters_x000D_ Battery: 3x1.5V/AAA (Emitter), 1x6F22/9V (Receiver)(Battery not included)_x000D_ Item Color: Green _x000D_ RJ45 Cable Length:16.8cm/6.6in _x000D_ Weight: Approx.360g/12.7oz _x000D_ _x000D_ Package list: _x000D_ 1 * Emitter (Battery is not included.)_x000D_ 1 * Receiver (Battery is not included.) _x000D_ 1 * crocodile clip test line _x000D_ 1 * user manual _x000D_ 1 * RJ45 cable (random color) _x000D_ 1 * cloth pouch _x000D_ 1 * Earphone