1、SIMPLE MEASUREMENT: The voltage detector pen features smart automatic range detection, capable of accurately measuring AC voltage within a range of AC12‑300V. 2、NON CONTACT VOLTAGE DETECTION: Employ the non contact voltage detection feature to safely identify charged wires within a wide range of 12V‑300V without direct contact. 3、CLEAR DISPLAY AND AUDIBLE ALERTS: The voltage detector pen boasts dual color digital display for real time alerts, and audible warnings. Quickly distinguish between live and neutral wires, a rapidly beeping red screen indicates the live wire, whereas a silent, green screen represents the neutral line. The LCD has a backlit to provide clear and accurate readings, even in dim lighting conditions, ensuring high visibility and convenience. 4、ADDITIONAL FEATURES: Built in light enhances visibility in darker environments. The LED light function can brighten any work area to prevent electrical shocks, aiding nighttime operations. 5、CONVENIENT AND USER FRIENDLY DESIGN: With a compact and portable pen like design, the voltage tester offers easy operation suitable for both professionals and DIY enthusiasts.