[Free Switching Between High and Low Sensitivity]The voltage tester can detect voltages in two voltage ranges: 12V-1000V / 48V-1000V. The sensitivity can be changed by pressing the "S" key. During use, the probe's precise NVC sensor can recognize the voltage and display it on the LCD screen.[Non-contact Voltage Tester]The insulating shell of the voltage detector ensures safety. The voltage tester can automatically identify the live line and the neutral line, suitable for household and industrial power detection.[Two-color light alarm and sound alarm] During the test, the voltage intensity will be displayed on the screen. The screen will light up in red or green. As the voltage signal strength changes, the bar graph on the screen will increase or decrease, and the frequency of flickering and beeping will become faster or slower as the signal strength changes. When the voltage is higher than 90V, the screen will turn red and display the high voltage symbol. [Automatic shutdown, extended service life] If there is no operation for 5 minutes, the voltage tester will automatically turn off to save energy [LED lighting and pocket clip design] The tip is equipped with a flashlight, which can illuminate the work area when the power is off or in the dark; the pocket clip design makes it easy to fix and store. Quantity delivered: 1 piece,"