The General Technologies FaultFinder short/open circuit finder and tracer, No. FF310, is a tool specifically designed to make the diagnosis and tracing of short and open circuits faster and easier for professional technicians, in 6V to 42V DC circuits. The FF310 can save many hours of tedious work, including untying wire harnesses, opening conduits, ripping apart upholstery or dismantling body panels to finding a short or break in the wire. Using RF technology, the FF310 enables the technician to trace and locate the fault without contact and up to a foot away, even when the wires are inside conduits, harnesses, or behind panels and upholstery. This tool set includes the receiver, transmitter, professional cordless circuit tester, automotive blade fuse socket adapters (three sizes), a hard carrying case and user’s manual.