This multifunctional tool Features the function of NCV AC voltage detector, zero/live wire discrimination and LED flashlight. With LED indicator for easy recognition and compact size for easy operation, it can be conveniently used in electrical testing. Features: Non-contact AC voltage detection with dual alarm of LED indicator light and buzzer is easy to use. LED flashlight ensures safety work in dark environments. Adjustable sensitivity: low sensitivity mode (48~1000V)/ high sensitivity mode (12~1000V). Default detection range at power-on state is the low sensitivity mode. Zero/ live wire discrimination: the tester's detection induction is strong when it's a live wire, and the induction is weak when it's a neutral wire. Drop resistant and waterproof housing allows it to work in humid places. One hand easy operation, very convenient to use. Compact, lightweight and portable to carry. Powered by 2 AAA batteries (not included), with battery undervoltage indication. Without operation or voltage signal, it will auto shutdown in about 5 minutes to save battery. Note: 1. Please read the user manual carefully before use. 2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Black Material: ABS + PC AC Voltage Range: 12~1000V Frequency: 50/ 60Hz Alarm Method: Screen Display + Sound Alarm Flashlight: White LED Operating Temperature: 0~40 Storage Temperature: -10~50 Work Height: 2000m Safety Level: CAT.II 1000V Power Supply: 2 * 1.5V AAA Battery (NOT included) Auto Shutdown: about 5min Item Size: 156 * 28 * 23mm / 6.14 * 1.10 * 0.91in Item Weight (without battery): 33g / 1.16oz Package Size: 185 * 35 * 28mm / 7.28 * 1.38 * 1.10in Package Weight: 54g / 1.90oz Package List: 1 * Non-contact AC Voltage Detector 1 * User Manual (English)