A non-contact voltage tester serves as a key component in any electrical toolkit, allowing the user to verify the presence of AC voltage prior to working on an electrical installation or during troubleshooting without requiring physical contact with live electrical conductors. Engineered to specifications required by professional electricians the Sperry Instruments VD6504 Non-Contact Voltage Detector features both audible (beeping) and visual (360 degree flashing red light) indicators to alert the user of the presence of AC voltage from 50V to 1000V. Includes a built-in flashlight. The fully insulated probe tip eliminates the risk of contacting live electrical wires while the patented battery check feature designed into the unit ensures tester and batteries are operating properly, virtually eliminating false negative readings. This unit features 250 Lb. crush-rated impact resistant ABS housing with a protective rubber overmold to withstand tough applications while the design ensures a positive user experience over long hours of repeated use. Applications include quickly locating hot terminals in receptacles, pinpointing breaks in wires and detecting the absence/presence of voltage at outlets, circuit breaker panels, light fixtures, switches, and motors. The unit includes a pocket-clip for secure portability. Tester is cETLus Listed, CE Certified, CAT III 1000V/IV 600V rated, and includes a Limited Lifetime Warranty. Operates from a single AAA battery (included). Frequency: 50-60Hz.