The Non Contact Voltage Detector is an essential tool for electricians, home inspectors, and those who fancy themselves reapairman. The tool is simple to use. Place the device within 1 cm of any wire or electrical outlet and the tip will turn red while the unit makes an audible "beep" if voltage is detected. The unit is equipped with a flashlight to help navigate through dark spaces. Digital multi-sensor measuring electrical tool 1. dirctly test 2. Sense Test 3. Leakage test 4. can replace the battery 5. Dark Vision Function Clear dignal voltbe canibe shown in the dark night 6. Auto-detecting function a.testing Domestic appliances b.testing circuits c.testing alternating circuits d.testing direct current power e.indirect testing high oltage f.Distinguish zero phase line and find the broken point
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