Feature: 1. Can hunt telephone lines, network lines and test common metal lines through clip lines 2. You can hunt the line when the switch and router are powered on. 3. You can test the continuity, crossover, and short circuit of the network cable when the switch and router are powered on. 4. Can test twisted pair, video cable, telephone line, ordinary metal wire, etc. 5. Multi-audio pulse signal transmission format, fast transmission speed. Specification: Condition: 100% Brand New Item Type: Cable Finder Power Supply: DC9V (Transmitter: AAx2, Receiver: AAx2) Maximum Working Battery: Transmitter ≤10mA; Receiver ≤30mA Testable Length Range: 1~1000 Meters Signal Transmission Format: Multiple Audio Pulses Signal Output Level: 8Vp-p Testable Port: RJ11 RJ45 Testable Wire: Twisted Pair, Video Cable, Telephone Line, Ordinary Metal Wire, etc. Package List: 1 x Transmitter1 x Receiver1 x Headphones1 x RJ11 Adapter Cable1 x RJ45 Adapter Cable1 x Clip Adapter Line