Sperry Instruments CS550A Circuit Break Finder excellent tool

Sperry Instruments CS550A Circuit Breaker Finder, Identifies Correct Circuit or Fuse, Audible/Visual Alert, 120V AC, 50 to 60Hz/ Sperry makes the job of locating electrical circuits (AC circuits of 110-125 volts) quick and easy. Turning off the correct breaker is critical / Quickly and easily identify correct circuit breaker or fuse protecting a specific electrical circuit Designed for operation at 120V AC, 50 to 60Hz Audible alert and bright LED visual indication Includes transmitter and receiver Requires no service interruption Receiver operates from one 9 volt battery included