1. Versatile Circuit Testing: Realtime voltage measurements spanning 12V to 300V provide detailed insights for multiscene diagnostics, including break point localization and accurate neutral live wire distinction shown clearly 2. Reliable Voltage Testing: Utilizes NCV sensor technology for contactless AC detection and reinforces electrician safety via double audiovisual alert mechanisms 3. Wide Applications: This voltage tester provides versatile detection capability, ensuring compatibility with various electrical panels while integrating multifunctional tool features for reliable and efficient use in multiple scenarios 4. Reliable Testing: Delivers peace of mind via variablefrequency buzzer feedback, insulation safe technology, and live circuit prevention alongside intelligent autovoltage recognition suitable for diverse user scenarios