Features Transmitter Function: Used for Cable Continuity Test And Scanning, Port Flashing, Cable Length Measurement, Poe Test, with Opm And Vfl Functions. Mode Switching: The Optical Power Meter Supports 850nm 1300nm 1310nm 1490nm 1550nm 1625nm Wavelength, Dbm, Db, Mw, Uw, Nw Unit Switching. Receiver Function: Sensitivity Adjustment, 300m Empty Shielded Network Cable And Non Mpty Shielded Network Cable, Ncv Detection, Lighting Function, Etc. Non Contact: The Receiver Is Designed with Lamp for Auxiliary Lighting, Can Be Used For Non Contact Detection of Ac Voltage of Household Wires. Built In Battery: The Transmitter And Receiver Have Built in 1500mah Battery, Type C Charging, with Charging Indicator And Low Battery Indicator. Feature: 1. APPLICABLE RANGE: Applicable to network line engineering and maintenance of telecommunications, computers, other metal conductors, etc. Specification: Item Type: Network Wire Finder Material: ABS Receiver Battery: 1 x 3.7V Polymer Battery, Battery Capacity: 1500mAh (built in battery) Transmitter Battery: 1 x 3.7V Polymer Battery, Battery Capacity: 1500mAh (built in battery) Transmitter: Cable Type: CAT5 CAT6 Undervoltage Protection Value: 60V Wiring Port: RJ45 Maximum Range: Approx. 300 meter / 984.3ft STP NTP: Yes Short Circuit Reminder: Yes Anti interference And Normal Mode: Yes Audio Transmission Frequency: 455KHz Power Meter: 850nm 1300nm 1310nm 1490nm 1550nm 1625nm (wavelength) Crimping: RJ458 core, minimum length ≥10cm Low Voltage Prompt: <3.5V±0.1V, power indicator flashes Receiver: Scanning Current: ≤300mA Remote Continuity: ≥300m Lamp: Yes Low Voltage Prompt: Yes Package List: 1 x Transmitter  1 x Receiver 1 x CAT5 Cable 1 x CAT6 Cable 1 x Crocodile Clip 1 x Earphone 1 x User Manual 1 x USB Cable 1 x Storage Bag Package List 1 x Transmitter 1 x Receiver 1 x CAT5 Cable 1 x CAT6 Cable 1 x Crocodile Clip 1 x Earphone 1 x User Manual 1 x USB Cable 1 x Storage Bag