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 VD6508 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. It also includes a built-in flashlight. This unit features 250lb crush-rated impact resistant ABS housing 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. Operates from a single AAA battery (included). Frequency: 50-60Hz.