VC1018 Non-contact Electric Tools Sensor Tester Pen Digital Intelligent AC Voltage Meter 12V-1000V Voltmeter Buzzer Detector 1. Breakpoint Detection: Detection along the line, where there is no breakpoint, there is a buzzer signal full grid, where the breakpoint is only 2 grids and no buzzer. 2. High-precision Sensor: High-quality PC protective cover, strong and not easy to break, more accurate detection, sensitive/stable/intelligent. 3. Flashlight/Backlit Screen: Press the second button to turn on the flashlight lighting/HD LCD backlit screen. No longer be afraid to see the screen value in the dark. 4. High & Low Sensitivity: Press the "S" button to adjust the high or low sensitivity, the green screen is low sensitivity, and the yellow screen is high sensitivity. 5. Non-contact Detection: When the electric test pen senses the nearby AC voltage, the screen will display red and full signal, and there will be a quick beep. Specification: Model: VC1018 Material: ABS Color: Red, Yellow, Blue Automatic shutdown: 5 minutes (no operation) Battery: 2 X AAA (not included) AC voltage range: 12-1000V AC50 / 60Hz Flashlight: Yes Zero line test: Yes Power failure detection: Yes Sensitivity test: Yes