The underground wire locator is designed to allow the user to track low-voltage cables used for garden and landscape irrigation systems and low-voltage garden lighting systems. It can also be used to track other steel wires. Features: Track and locate underground cables or wires in the wall. Enable cables to be located before drilling. The detection range is 3 feet and a cable length of 3000 feet. Equipped with a pair of 3.5mm headphones that can be connected to the receiver's headphone jack to improve efficiency in a noisy environment. Designed with a white LED flashlight for additional illumination in the dark. Can adjust the transmitter and receiver controls to move greater distances based on wire depth. Specifications: Material: ABS Headphones: 3.5mm headphones Net weight: 273g / 9.64oz Package weight: 370g / 13.07oz Package size: 28.3*15*4.8cm / 11.14*5.91*1.89in TRANSMITTER: Tone frequency: 200kHz Max. Length distance: 500m / 1640.42ft Max. Depth distance: 50cm / 1.64ft Max. Working current: Less than 70mA Max. Signal voltage: 15VP-P Signal display: Tone Power: 1 * 9V DC NEDA 1604 / 6F22 battery (not included) Transmitter size: 134 * 49 * 33mm / 5.28 * 1.93 * 1.30in Transmitter weight: 75g / 2.64oz Frequency: 200kHz Max. Working current: Less than 70mA Headphone jack: 1 Power: 1 * 9V DC NEDA 1604 / 6F22 battery (not included) Receiver size: 163 * 40 * 27mm / 6.42 * 1.57 * 1.06in Receiver weight: 101g / 3.56oz Packing list: 1*Transmitter 1*Receiver 1*Headphones 1*Accessories 1*Manual (English)