Sierra 18-9904 Fault FinderUse the Sierra Fault Finder for tracking and tracing open and short circuits, broken wires and current leaks.Features: Non-contact technology. No wire piercing required.; Operates on 6 to 42 VDC systems; 8" flexible probe for reaching wires in congested places; Transmitter and receiver LEDs show open or short circuit conditions; Adjustable sensitivity for all tracing situations; Variable audio/visual signal provides fast & intuitive feedback on the circuit/wire proximity; Tracing of wires possible even inside bundles or conduits and behind panels, carpets, etc.; Transmitter has auto polarity and leads with 5 amp alligator clips; Includes: Transmitter; Receiver; Fuse Block adapters (3 sizes: Mini, ATO, & Maxi); Cordless Circuit Tester; Hard padded carry/storage case; User's Manual;