【Non-contact safety voltage tester】 can be tested without physical contact. The buzzer and flashing light remind at the same time and increase the safety factor. The insulation function ensures safe testing. Automatically differentiates between zero line and live line, also suitable for detecting line breaks in 110V and 220V power supply system. 【9 sensitivity levels to choose from.】 The voltage range is 12-1000 VAC. During use, the NVC sensor of the probe automatically detects the voltage intensity. The measuring device activates the corresponding signal strength indicator based on p. 【Low voltage display】 ➤ If the battery voltage is lower than about 2.6V, the operation display flashes three times and the buzzer sounds and automatically turns off. Please replace the battery. 【LCD Display & LED Flashlight】 H/W display intensity, red is the highest intensity. The white LED flashlight has high brightness and low power consumption, which illuminates the working area in the dark. The lighting and probe are combined for easy measurement. 【Auto Shutdown & Portable Pen Hook】 After about 3 minutes of no operation or signal detection, the voltage detector will automatically shut down to extend battery life and save energy. With the convenient portable pencil hook, you can easily remove and carry it.