Digital Car Circuit Scanner Diagnostic Tool Tester Cable Wire Short Open FinderFeature:This instrument is designed to identify and trace wires or cables without damaging the insulation. You can also use it in checking for 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.Easy to use:Simply connect the transmitter in series with the circuit or wire under test, (i.e.: 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.42V Ready: for use in the new generation of vehicles with mixed or single 42 Volt systems. Operates on DC voltages from 6 to 42 volts.Internally protected against power surges and overloads.7" flexible probe allows reaching wires in congested places.Transmitter and Receiver LEDs show open or short circuit conditions.Adjustable sensitivity for all tracing situations.No wire piercing required, non-contact technology!Instruction:The probe of the Receiver is built of coiled steel and may be bent as needed, in order to reach wires in ongested or difficult areas. Depending on the circuit characteristic and sensitivity settings, the probe will pick up the signal from the wire in a range of positions. However, for the best possible range the Receiver's probe tip (black cap) should be positioned perpendicular (at 90o) to the wire being traced and either above or below it.Package included:1 x Automotive Short and Open Finder Sender1 x Automotive Short and Open Finder Reciever1 x 9V, 6F22 Battery1 x Carrying PouchNote:1. Only for us on DC voltage, don't connect to circuit exceedomh 42 volts DC under any circumstances.2. Do not use with any component or circuits of the ignition system.3. Do not use on any circuit directly or indirectly connected to AC lines or any other AC power source.4.Before using this device,check the vehicle's electrical wiring and disconnected any part or system sensitive to voltage and current pulses such as air bags, electronic control modules, etc.