12V Smart Non-Contact Tester Pen Voltage Detector Pen Meter 12V-300V Current Electric Sensor Test Pencil with Metal NCV Probe Features: Alarm ModeThe buzzer and indicator light will be triggered when voltage is detected. High-frequency beeps means high voltage and live wire are detected. Low-frequency beeps sound mean low voltage and null wire are detected. Measurable VoltageEquipped with a sturdy metal NCV probe for testing AC voltage; the test probe touches the conductor with AC voltage, and the voltage reading will show on display. Multi-FunctionBright LED flashlight for work in dark areas; Automatic Power Off after 5 minutes without operation or signal detection; Pocket-sized, pen hook allows you to carry it in your shirt pocket. Special FunctionCan be used as a screwdriver for your convenience while working. Sizeas shown AC voltage: 12~300V Batteries1 AAA batteries required. (included) Package Included: 1pcs * Pen Type Voltage Detector Note: Please allow 0.5-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!