Network Wire Finder Optical Wire Meter Tracer Digital Fiber Optic Transmitter Receiver Built in Battery 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