Ideal 61-957 SureTrace Open/Closed Circuit Tracer Kit Numeric value and audible signal provide quick and easy-to-understand tracing feedback Receiver display rotates automatically for easy viewing "0-99" display of signal strength; 4 modes of sensitivity; peak detection bar graph Identifies breakers/fuses with CertainCircuit detection; pinpoints opens and shorts and traces wires behind walls Includes transmitter (TR-955), receiver (RC-959), tracer lead test set (TL-956) and hard carrying case (C-957)