Ever had a contractor bury one of your wires or cables behind drywall? Then you know how frustrating and time consuming locating it can be. Let the NF-816 help! The NF-816 can find wire and cable up to 3 feet deep allowing you to pinpoint the exact location of your wire through walls, ceilings, and floors.
The NF-816 also is great for tracking down buried wires in systems such as invisible fence, irrigation, CATV, Satellite TV, and more! Simply hook one alligator clip lead to your wire and another to a good earth ground, and you can track your wire up to 3 feet deep and 1000 feet away! If locating wires is crucial to your job, you'll want to have this unit on you at all times.
Features:
Locates and tracks buried wires
Track wires behind walls
Easily locates hard to find circuit breakers
Pinpoint drill sites accurately
Locates alarm, sound, and computer wires
Earphones for noisy environments
Flashlight on toner for dark spaces
Specifications:
Tone Frequency: 900Hz
Max Length Distance: 1000 feet
Max Depth Distance: 3 feet
Max Working Current: Less than 70mA
Max Signal Voltage: 15Vp-p
Tone Mode: 1 Tone
Signal Display: Signal tone, antenna
Voltage Protection: AC 60V/DC 42V
Battery Type: DC9.0V (included)
Dimensions: 49 x 135 x 33mm
Kit Includes:
1x Emitter
1x Receiver
1x Earphone
1x Instruction manual
2x 9V Battery
1x Carrying case with belt loop
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Under ground in wall wire toner tracker 
Most excellent helper in cable test 