Noyafa H131235A Underground Cable Wire Locator Test Metal Pipes, Electrical Wires, Telephone Wire, Coaxial Cable, Cable Tracker Description This device is mainly designed to allow users to track cables in the underground or in-side wall. At no time should this device be used on utility mains powered devices or cabling connected to the utility mains. If no Doubt do not use this device and call in a suitably qualified electrical contractor. NF-816 Transmitter specification. Tone frequency: 200kHz The Max length distance: 1000 feet The Max depth distance: 2 feet The Max. working current: Less than 70mA Max. signal voltage: 15Vp-p Signal display: Tone Max. signal voltage: 15Vp-p Battery type: DC9. 0Vx 1pc Dimensions (LxWxD): 49 x 135 x 33mm NF-816 Receiver specification Frequency: 200kHz The Max. working current: Less than 70mA Earphone jack: 1 Battery type: DC9. 0Vx 1pc Dimensions (LxWxD): 43 x 168 x 27mm Features: Locate underground non-energized wires Range: up to 2 feet deep and 1000 feet in length Locating alarm, sound and computer wires Tracking underground, buried wires and other hidden-wires, BUT NOT FOR sprinkle or irrigation valves Determining which receptacles are on specific circuits WARNING: Only for single-core or double-core wire, NOT FOR multi-core wire and bundled wires. 9V batteries is NOT included. Included Components: Pcb Product Details: Brand: Noyafa Power Source: Battery Powered Style: Digital Color: yellow, Black Is Discontinued By Manufacturer : No Package Dimensions : 11.26 x 5.91 x 1.85 inches; 12.87 Ounces Item model number : H131235A Date First Available : April 24, 2014 Manufacturer : NOYAFA Country of Origin : China Best Sellers Rank: #124,148 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #240 in Network & Cable Testers #240 in Network & Cable Testers Customer Reviews: 4.1 4.1 out of 5 stars 49 ratings