Noyafa NF-820 Upgraded Underground Cable Wire Locator with Anti-Interference to Locate Pet Fence Wires, Metal Pipes Description Detecting buried wires in the underground or in walls Application: Installation and maintenance of weak current system, communication line, comprehensive wiring circuit, telephone system, computer network, other metal wire circuit etc,. Main features Detect cable location in underground or other invisible cable, the range is 0-5 feet. Signal sensitivity for transmitter and receiver is adjustable. (0-5 feet) Easy to track with complete AC Interference Rejection tone trace live cable (220V with socket avoiding burnout. Capable trace cable, such as single conductors, 2-core cable. Rechargeable Lithium battery for transmitter. 1. Earphone helps work in noisy environment. 2. Cable lead and socket can be used at the same time. 3. Low battery indicator function. 4. Rechargeable lithium battery for transmitter. Technical indexes: Max cable length 20 km Max depth distance - 2m Power supply Transmitter : 3. 7V Lithium battery Receiver: 9V battery Low battery indicate Transmitter: Receiver : Charging current 800mA Signal transmission format Multi-frequency pulse Signal output level 21Vp-p Signal transmission distance 1000m Dimensions (LxWxH) Transmitter : 152 x 55 x 34 mm Receiver: 252 x 45 x 28 mm Package Included: 1Pcs x 820 Cable Tester 1Pcs x 5V 1A Charging adaptor 1Pcs x USB Charging cable 1Pcs x Earphone 1Pcs x Manual 1Pcs x Toolkit