Parameters: Transmission signal: Digital signal (no interference or noise) Cable selection: Supports RJ45 twisted pair cables, RJ11 telephone cables, BNC video cables, and weak current metal cables 1-8 wire sequence, G shielding layer on/off indicator light; Network cable type detection: direct/cross/wrong UTP line sequence test: Line and network cables are suitable for 100Mbps/Gigabit detection; Port near end, mid end, and remote on/off detection Network cable port on/off detection: Detect the on/off status of each pin on both sides of the network cable port Pd power detection: testing the power supply of PoE switches LED lighting: Short press to turn LED lights on/off Mute mode: Press and hold the MUTE button to switch to mute mode, and use the indicator light to mute and search for lines Audio output port: supports external audio output Power supply (battery): measuring range, 2 No. 5 batteries Work environment and specifications: Working temperature: -10 ℃ -+50 ℃ Working humidity: 30% -90% External dimensions: Sender: 152mm x 62mm x 27mm/0.12KG Receiver: 218mm x 48mm x 32mm/0.1KG Function Introduction: 1. Secondary encoding digital mode, anti-interference and noise free, more accurate line finding 2. New reuse technology, simultaneous testing of line finding and sorting, and quick verification of line finding results 3. Gigabit/100Mbps network cable, direct/cross/wrong cable, clear at a glance. 4. Network cable port on/off detection 5. Interface 60V withstand voltage and anti burning, supporting POE live line searching 6. Shielding network cable shielding layer on/off detection 7. Cable short circuit detection 8. Supports line detection during switch connection, which can be used for switch 100/Gigabit identification 9. PD power detection 10. Phone standby/incoming/outgoing, clear at a glance 11. Support mute mode 12. Dual LED lighting ensures normal construction in dark environments.