Features: Detect AC Voltage: Pen tip touching live wire , hand touching side touch pole, measuring voltage. LED Flashlight Lighting Function: No matter what environment, can be clearly illuminated to prevent the danger of electric shock. Two-color Display Screen: Warning sound prompt, two-color to distinguish the zero live line, green screen judged as zero line, red screen judged as a line of fire. Line Breakpoint Detection: Along the road detection screen index grid to HiS and buzzer alarm, to the line disconnection position index grid is LOW. NCV Induction: When a nearby AC voltage is detected, the screen index mesh rises from LOW to HiS. Specifications: Color: Black / Red (Optional) Model: VD807 Material: ABS Measuring Range: 12-300V Alarm Method: Sound and light alarm Frequency: 50Hz/60Hz Battery: 2 * 1.5V AAA bateries (Not included) Flashlight: LED lighting Auto Power Off: Yes Zero Fire Wire: Touch the touch pole with the tip of the pen, high voltage is the live wire, low voltage is the neutral wire. Security Level: CE CAT. II 1000V/CATIV 600V Item Size: 166.4 * 29.6 * 18mm / 6.55 * 1.16 * 0.71in Item Weight: 33g / 1.16oz Package Weight: 48g / 1.69oz Package Size: 19.6 * 3.6 * 2.2cm / 7.72 * 1.42 * 0.87in Package List: 1 * Non-Contact AC Voltage Detector 1 * User Manual (English)