【Non-contact safety voltage tester】 can be tested without physical contact. The buzzer and flasher remind at the same time and increase the safety factor. The operation of the insulation guarantees safety tests. Automatically differentiates between zero line and live line, also suitable for detecting line outages in 110V and 220V power system. 【9 sensitivity levels to choose from.】 The voltage range is 12-1000 VAC. During use, the probe's NVC sensor automatically detects voltage intensity. The meter activates the corresponding signal strength indicator based on p. 【Low voltage display】 ➤ If the battery voltage is lower than about 2.6 V, the low voltage display operation flashes three times and the buzzer sounds and turns off automatically. Please replace the battery. 【LCD screen and LED flashlight】 H/L 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. Lighting and probe are combined for easy measurement. 【Auto Shutdown & Portable Pen Hook】After about 3 minutes without operation or signal detection, the voltage detector will automatically turn off to prolong battery life and save power. With the convenient portable pencil hook, you can easily take it out and carry it. Turn on the power switch and press the up and down buttons to adjust the signal strength < p>Adjustment range LED digital display, speed adjustable 1 to 9 speeds freely adjustable Please install The battery correctly and pay attention to the positive electrodes and negative. Error installation makes the voltage tester pin stop working normally. AC1 Voltage Tester Intelligent power consumption reminder < p>Auto Power Off - After about 3 minutes without operation or signal detection, the voltage detector will automatically turn off to save electricity. This can extend battery life. Battery status indicator - It is helpful to use the pen safely. If the pen does not work not good, you will be prompted on the LCD screen. Replace the battery in time to avoid using the pen when it is not powered. Number of products: 1 piece Color: as picture shown Size: 159*20*29mm