Wire Finder with Earphone Multifunctional Network Line Locator RJ11 RJ45 Telephone Cable Tester Item Type: Wire Tester Model: XQ 350 Material: PC Transmitter Power Supply Method: 1 x 6F22 9V battery (not included) Receiver Power Supply Method: 1 x 6F22 9V battery (not included) Maximum Working Current: ≤30mA Signal Transmission Format: Multi Frequency Pulse Signal Output Level: 8Vp-p Signal Transmission Distance: ≥3Km Characteristic: Tracking telephone lines, LAN cables Wire tracking in electrical systems Verify LAN cable status Continuity test Low battery indication Bright white LED flash. Cable Allocation Test: Open circuit, short circuit, and crossover of LAN cables, 2 wire (RJ11), 4 wire (RJ45) telephone cables Cable status test (2 wires) Line DC detection and anode and cathode measurement Function: Find wires on all types of Ethernet switches, routers, and PC terminals for connection operations. Quickly find the target line from a large number of phone lines. Quickly find the target line from a large number of network lines Can replace cable tester Compare the volume of the tout sound with the brightness of the signal indicator light, and find the target line with the highest volume and the brightest indicator light