When the Transmitter is connected to a circuit. the Receiver’s sensitivity can easily be adjusted to detect the transmitted signal on breakers. fuses. and wire through drywall. cement block. and underground. Kit comes with transmitter. receiver. blade and ground prongs. alligator clips. 3-Foot and 20-Foot lead adapters. AC plug leads. instructions. all required batteries. and a hard carrying case with handle for convenient transportation and storage.WARNING Read. understand. and follow all warnings and instructions before operating testers. Before each use. verify tester operation by testing on a known live and correctly wired receptacle and circuit. DO NOT use if the tester appears damaged in any way. DO NOT use if the tester appears damaged in any way. NEVER use the tester on a circuit with voltages that exceed the category-based rating of this tester. Inspect the meter and test leads before use. DO NOT use if they appear damaged. DO NOT use testers during electrical storms or in wet weather. Turn off testers and disconnect test leads before attempting to replace batteries or fuses. Use personal protective equipment to prevent shock and arc blast injury where hazardous live connectors are exposed.The Advanced Circuit Tracer Kit provides reliable tracing of energized or non-energized breakers. fuses. and wiresEasily adjust receiver sensitivity level to detect the transmitted signal through drywall. cement block. and undergroundVersatile applications include tracing wires. conduit or pipes. or a single wire in a bundleAudible beep and visual indicators on receiver denotes signal strengthReceiver features a flashlight for illumination in low-light areas and NCV function to test if wires are energizedTransmitter has AC/DC external voltage indicators of 12V. 48V. 120V. 240V. and 480V