Non-Contact Safety Voltage Tester allows testing without physical contact. The device features a buzzer and flashing light to provide alerts, enhancing safety during use. Insulated operation ensures safe voltage detection. Automatically distinguishes between neutral and live wires, suitable for detecting line breaks in 110V and 220V power systems. Features 9 adjustable sensitivity levels with a detection range of 12-1000V AC. The NVC sensor at the probe automatically detects voltage intensity, and the signal strength indicator activates accordingly. Low battery indication: When the battery voltage drops below approximately 2.6V, the display flashes three times, the buzzer sounds, and the device powers off automatically. Battery replacement is required. Equipped with an LCD display and a white LED flashlight. Signal intensity is displayed with H/L indicators, with red indicating the highest level. The LED flashlight provides high brightness and low power consumption, illuminating dark work areas. The integrated light and probe design allows for convenient measurements. Auto shut-off function: The device powers down automatically after approximately 3 minutes of inactivity or no signal detection, helping to conserve battery life. Includes a handheld stylus hook for easy carrying and quick access. Ergonomic pen-style design offers comfortable handling and portability. Lightweight and compact, it can be easily carried in a pocket. The pencil hook enables convenient storage and transport. AC Voltage Tester with intelligent power management. Auto power-off function helps save energy and extend battery life. Battery status is displayed on the LCD screen to ensure safe operation. If the device is not functioning properly, a warning will appear on the screen. Prompt battery replacement is recommended to maintain reliable performance.