Usage Tips:The underground cable locator is designed to allow the user to track low voltage cables used in automatic garden and landscape irrigation systems and in low voltage garden lighting systems. It can also be used to track other metal cables. Features: Track and locate underground wires or in walls. Allow cables to be located before drilling. The detection range is 3 feet and the cable length is 3000 feet. Equipped with a pair of 3,5mm headphones that can be connected to the receiver headphone jack to improve performance in noisy environments. Designed with a white LED flashlight for additional lighting in the dark. It can adjust the transmitter and receiver controls to move further distances depending on the depth of the wire. Technical data: Material: ABS Headphones: 3,5 mm headphones Net Weight: 273g/9,64 oz Package Weight: 370g / 13.07oz Package Size: 28,3 * 15 * 4,8 cm / 11,14 * 5,91 * 1,89 inch TRANSMITTER: Tone Frequency: 200 kHz Memory clock speed Distance: 500 m/1640,42 feet Memory clock speed Depth distance: 50 cm/1,64 feet Memory clock speed Operating current: less than 70mA Memory clock speed Signal Voltage: 15VP-P Signal Display: Tone Transmitter Size: 134 * 49 * 33 mm / 5,28 * 1,93 * 1,30 inch Transmitter Weight: 75g/2,64 oz RECIPIENT: Frequency: 200kHz Memory clock speed Operating current: less than 70mA Headphone jack: 1 Receiver Size: 163 * 40 * 27 mm / 6,42 * 1,57 * 1,06 inch Receiver Weight: 101g/3.56oz List of things to pack: 1 * Transmitter 1 * Receiver 1 * Headphones 1 * Case 1 * manual (English)