Review on 📞 Genuine NF816 Subterranean Electrical Telephone by Andre Bennett

This unit received mixed reviews so I doubted it would work. The documentation isn't great, but after playing with it I can report that it did a great job of locating the sprinkler wires that were buried about 16 inches deep. After setting it up, it took me about 10 minutes to accurately locate over 200 feet of underground cable. I think some of the negative reviews are due to operator error, meaning they didn't understand how this device was supposed to work. I found that it actually works two ways. One method uses both lines, as when searching for underground cables. One wire is attached to a good earth ground and the other is connected to the wire in question. In this usage, the wire will be below "zero". Another method uses only one of wires. In this usage, the wire is under the "peak" tone. This method is most likely to be used when trying to find a wire in a wall. It seems that this device is sold under several brand names. , so I would guess that they are all actually the same entity. o For some reason the power control on the transmitter is working against the displayed power (volume) scale. I checked this with a digital voltmeter. Overall I think this locator costs less than $50.