Digital Circuit Breaker Finder. Quickly, accurately, and automatically find the corresponding circuit breaker of any 120V standard outlet. Flashing arrow indicator for easy identification. Strong transmitter reaches distances up to 1,000 feet. 90 - 120V operation. Microprocessor controlled for more reliable identification. Auto power-off feature saves battery life. Accessory kit available (Catalog No. 69411) includes light socket and alligator clip adapters.