Features: 1The sensitivity of high& 8209voltage electrical measurement with non& 8209contact can be adjusted to facilitate measurement in different environments. 2Enhance the NCV function to detect the line without touching the line. 3Intelligent recognition can merely detect the null line and the live line. 4LCD high?definition backlight screen, using high?quality high?performance chips, multiple protection circuit boards, clear reading, backlight function can work as usual in dark environments. 5Accurate test and stable performance, alarm mode with sound and light, easy to operate. Condition: 100% Brand New Item Type: Non-contact Test Pencil Material: Plastic Model: HT100 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 Null and Live Line Judgment: When the backlight color is green, it is null line, when it is red, it is live line Signal Strength Display: Analog bar 4-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 Battery (Not Included) Package Included: 1 x Test Pen (Batteries Not Included)