For locating electrical short and open circuits.FAULT FINDER TOOL (SIERRA)SKU: 8.08282E+11$416.99PriceQuantity*Add to CartFeatures Includes cordless circuit tester (18-9906) and fuse socket test connectors (18-9907) Operates on 6 to 42 VDC systems 8" Flexible probe reaches in congested places Adjustable sensitivity Transmitter and receiver LEDs signal open or short circuit Auto polarity transmitter that leads with 5 amp alligator clips Includes hard shell carrying case