Electronic voltage and metal detectors.<br> <br> Tool for detecting hidden cables and water and gas pipes hidden behind walls.<br> <br> Product technical characteristics: <br> <br> Metal test: 15mm diameter steel tube, 24mm test depth (reference value)<br> <br> Voltage test: AC wire greater than 100V, depth 30mm<br> <br> General product features:<br> <br> Away from the object to be measured, turn on the rotary switch and adjust it slowly to make it just in the state without sound and without light. When detecting metal, move the metal detection head (METAL) of the detector parallel to the surface of the object to be measured. When the voltage sensing part (VOLTAGE) of the detector is moved parallel to the surface of the object to be measured, when the detector is close to a metal object or a voltage loop, it flashes and beeps, and when 'there is no metal object or voltage loop nearby, it will not flash or ring. No sound. When the test is finished, please turn off the power. The detector cannot test AC voltage in metal pipes, metal walls or deep parts.<br> <br> Power supply: 9V battery type 6F22<br> <br> Product size: 150x78x24mm<br> <br> Standard configuration: bare watch (no battery inside), battery, manual, certificate (warranty card)