AC voltage display and buzzer alarm - The electric test pen provides an AC voltage display and a buzzer alarm. When measuring AC voltage, the pen tip touches the live wire and the hand touches the touch electrode on the side. This arrangement supports accurate voltage measurement while accounting for individual variations in the human body’s simulation of earth. Live Wire Identification, fast and highly sensitive discrimination - The test pen quickly and highly sensitively identifies live wires. By touching the touch pole with your hand and inserting the pen tip metal into the hole, a red screen and a beeping sound confirm a live wire. The green screen displays a voltage of 0V, indicating a neutral wire. Intelligent non-contact, NCV power induction - With non-contact induction, the test pen detects nearby AC voltage without touching the conductor. The screen index rises from LOW to HiS, and the beeping alarm becomes more frequent as the power source gets closer. This provides an intelligent safety feature that facilitates detection. Line breakpoint detection, test pen function - The test pen can detect line breakpoints along a circuit. A HiS index and a beep indicate a smooth and good line, while a LOW index signals a disconnection, enabling effective troubleshooting. Usage scenarios - Identifying live circuits in outlets, switches, and fixtures to verify power status before work. - Locating neutral wires and confirming wiring integrity in electrical installations. - Checking for line continuity and detecting disconnections along cables or wiring runs in walls or conduit. Key benefits - Safe and quick identification of live versus neutral lines with clear visual and audible indicators. - Non-contact detection helps reduce exposure to energized conductors during inspection. - Line integrity checks aid in troubleshooting wiring issues and ensuring circuit continuity.