Features:  After track the line, it can directly test the path, short circuit and break of the line sequence to improve the work efficiency.  Strong signal, longer distance, anti-interference, no noise more accurate line tracer.  Only one crystal heads can be tested, too.  Withstand 60V high voltage, do not burn out electrical appliances.  Observe the blinking frequency of the LED indicator on the switch or router to quickly locate the switch cable.  Determining the telephone line status.  USB Cable design, convenient for charging.  Non-contact detection to ensure safety in operation.  With LED lighting, also suitable for dark environment operation.  Receiver knob switch, adjustable sensitivity.    Specifications:  Transimitter interface: RJ11, RJ45  Transimitter size: 60 * 135 * 30mm / 2.4 * 5.3 * 1.2in  Transimitter battery: 3.7V, 1400mAh  Receiver suitable cable: CAT5, CAT6  Receiver battery: 3.7V, 1400mAh  Receiver standby current: ≤35mA  Receiver current: max. ≤280mA  Receiver size: 198 * 50 * 30mm / 7.8 * 2.0 * 1.2in  Package size: 220 * 145 * 45mm / 8.7 * 5.8 * 1.8in  Package weight: 400g / 0.9lb    Packing List:  1 * Transimitter  1 * Receiver  1 * Pair of Earphone  1 * Clip  2 * Cable  1 * USB Cable  1 * User Manual  1 * Storage Bag