Gardner Bender Non-Contact Voltage Tester is a reliable and easy-to-use tool designed to audibly and visually indicate the presence of AC voltage ranging from 50V to 600V. This tester helps you quickly locate breaks in wires and detect voltage at receptacles, switches, and motors. It efficiently identifies hot terminals in receptacles, ensuring accurate and safe testing. The fully insulated probe tip eliminates the risk of accidental contact with live electrical wires, providing added safety during use. Equipped with a built-in safe-test feature, the tester confirms that both the device and batteries are functioning properly. Powered by two 1.5V photo/electronic disc batteries, which are included, this voltage tester comes with a 5-year warranty and is UL listed for quality assurance. Model Number: GVD-3504