Tasco CMT24DS Circuit Tracer Mapper is the first kind of device like this that maps branch circuits of wiring systems concurrently with a single receiver and transmitter, etc. Tasco CMT24DS circuit tracer mapper system allows for one person to identify which circuit breakers or fuses are feeding off into specific branch circuits. The CMT24DS Circuit Tracer Mapper System can test up to 96 branches concurrently, saving both time and money. Traditional methods of identifying circuit breakers and wiring are inefficient and costly, often requiring two people to perform them. With today's sensitive electronic equipment, simply power cycling breakers on and off is no longer an option. Even modern circuit tracers usually trace only a single branch circuit at a time. The Circuit Tracer Mapper transmitter connects to lines at the panel instead of at the end of the branch circuit. The receiver displays the corresponding circuit number through digital signal processing, so the user knows exactly which breakers the transmitter leads are connected to. There is no time being wasted in comparing signals or looking for the strongest signal while using the CMT24DS. As a result using the Circuit Tracer Mapper system will greatly reduce man-hours spent locating branch connections of electrical circuits. Tasco Inc. is a leading manufacturer of circuit tracers and wire tracers. Made in USA.