The General Technologies FaultFinder short/open circuit finder and tracer, No. FF310, is a tool specifically designed to trace and locate short and open circuits, broken wires and current leaks on any electrical circuit with voltages from 6V to 42V. The FF310 set includes one transmitter and one receiver (tracer). The FF310T (transmitter) when connected, injects a radio signal into the faulty circuit or wire, which allows to trace it with the FF310R (receiver) from several inches away, even when the wires are inside conduits, harnesses, or behind panels and upholstery. The 8” flexible probe allows use in constrained spaces, and a set of fuse blade connectors is provided for convenient connection of the FF310 transmitter in the socket of blown fuses or open circuits.