and High Quality! Easy to use: simply connect the transmitter in series with the circuit or wire under test, (: in place of a blown fuse, across a connector,in series with an open wire, a light bulb socket, etc.), and scanning the circuit/wire with the tracers flexible probe to find the trouble spot This instrument is designed to identify and trace wires or cables without damaging the insulation. You can also use it to check short circuit and loacting open circuit and so on. There are a Sender and a Receiver included in the instrument. Tracing of wires is made possible even inside bundles, conduits, behind panels, under carpets, upholstery, etc 6-42 V Ready: for use in the of vehicles with mixed or single 42 Volt systems, Weight: 0.62721513539 Pounds, Manufacturer: Geroosaty