VISUAL AND AUDIBLE ALARM: A beeping prompt and flashing signal indicator give a clear alert when AC voltage is detected. The LCD's analog bar changes color to indicate voltage levels - red for high voltage/hot wire, green for low voltage/neutral wire. Not suitable for testing Christmas lights. Non-Contact Voltage Detection: Safely detects AC voltage without direct contact. Simply hold the tester close to the outlet or wire; the flashing prompt and beeping sound confirm that voltage is present. Ideal for use with circuit breakers, outlets, and wires, it increases safety and convenience for electricians and homeowners. Dual Range Testing: This voltage tester offers dual sensitivity ranges to suit a variety of environments. Use the "H" button to adjust the sensitivity - low for household appliances, high for power systems. The analog bar provides an intuitive display of voltage levels. User-Friendly Features: Designed for easy carrying, it comes with a pocket clip and a bright LED flashlight for dimly lit areas or emergencies. Features automatic power off after 5 minutes of inactivity and low battery indication. Includes multiple test functions such as AC voltage detection and live/neutral testing. Colour:As Shown Material:plastic Package Contents: 1 * Waterproof voltage tester