and High Quality 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,etcEasy 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 spot6-42 V : for use in the new generation of vehicles with mixed or single 42 Volt systemsOperates on DC voltages from 6 to 42 voltsInternally protected against surges and overloads7inch flexible probe allows reaching wires in congested placesTransmitter and Receiver LEDs show open or short circuit conditionsAdjustable sensitivity for all tracing situationsNo wire piercing required,non-contact technology Specification:Wire TracingChecking for short circuitlocating open circuitWire identificationItem Length:20.4 cmItem Width:4.4 cmItem Type:Electrical Testers Test LeadsSpecial Features:short cable finder. Supply:Two 9V batteries RequiredItem Type: Electrical Testers Test LeadsItem Weight: 0.22kgcolor:As shownMaterial:plasticPackage Contents:1 x Automotive Short and Open Finder (with battery)1 x English manualOnly the above package content,other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.