Features: 1Intelligent electric test pen, supports non?contact measurement, safe and reliable, and quick response. 2Adjustable sensitivity, the voltage detection range is AC12?1000V for high sensitivity AC48?1000V for low sensitivity. 3With neutral/live line recognition, when the backlight color is green, it is neutral line, and when it is red, it is live line. 4Support live wire breakpoint test, move NCV induction probe along a single wire to test, and the voltage alarm disappears when circuit breakpoint detected. 5With flashlight function, button can be individually turned on the flashlight function, which can be detected in the dark or dim environment. 6It supports automatic shutdown after 3 minutes without any operation, with sound and light alarm function, which is an excellent device for circuit detection. Condition: 100% Brand New Item Type: Test Pen Material: Plastic Model: HT100P Voltage Detection Range: High Sensitivity AC12-1000V Low Sensitivity AC48-1000V Frequency: 50/60Hz Alarm Mode: Sound and light alarm Probe Shape: Prolate shape Backlight: Red and green dual-color backlight Neutral/Live Line Judgment: When the backlight color is green, it is neutral line, when it is red, it is live line Signal Strength Display: Analog bar four-level sensitivity Signal Strength Indication Mode: The buzzer changes from slow to fast the color of the backlight changes from green to red the analog bar changes from low to high Automatic Shutdown: No button operation, no induction signal will automatically shut down after 3 minutes Battery: 2 x AAA Batteries (Battery Not Included) Package Included: 1 x Test Pen (Battery Not Included)