Features: Uses: It can detect cables, wires, water supply pipes buried in walls or underground; interruption and short circuit of cables and wires buried in walls. Detects fuses and distributes current circuits; detects interruptions and short circuits in underfloor heating. Receiver sensitivity can be adjusted manually or automatically. Can automatically scan frequency. Both transmitter and receiver can work in quiet mode. Working principle: According to the change of the signal, the specific position and fault of the buried cable or pipeline can be detected. Application: installation and maintenance of weak current systems, communication lines, integrated wiring circuits, computer networks, and other metal wire circuits. USB direct charging: 1400mAh battery, long use time and longer battery life. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Measuring range: 200m Measurement accuracy: 0.01 Power supply voltage: 220 V Size: 10*26cm Package List: 1 set x Underground Cable Tester