1Designed to identify and trace wires or cables without damaging the insulation. 2You can also use it in checking for short circuit and locating open circuit and so on. 3With the flexible probe, you can reached wires in congested places. 4Internally protected against power surges and overloads, more dependable to use. 5Transmitter and receiver LEDs show open or short circuit conditions. 6Judge continuity of the cables or wires, and diagnose the break point. 7Comes with a storage bag, easy to carry and store, convenient for using.1 x Set of Car Electric Circuit Tester1 x ManualCondition: 100% Brand New_x000D_Item Type: Electrical Circuit Tester_x000D_Material: ABS_x000D_Color: As picture shown_x000D_Voltage: DC 6-42V_x000D_Battery: 2 x 9V Battery (Not Include)_x000D_Main Function:_x000D_1. Quickly find the short circuit point of the automobile circuit_x000D_2. Quickly find the open circuit point of the automobile circuit_x000D_3. Tracking wires_x000D_4. Quickly find the wire leakage_x000D_Function Introduction:_x000D_Automobile special electronic testing tool [Automobile (short circuit/open circuit) line finder]_x000D_Short circuit/open circuit detection is a problem often encountered in the automotive circuit detection process, but sometimes it is often time-consuming and laborious to detect. For automotive electricians, it is more often to detect circuit failures, especially short-circuit open circuit failures of accident vehicles. This type of fault is very difficult to detect. Even experienced maintenance personnel can only roughly judge a few possibilities, and finally have to "pick" this circuit, and if there is no experienced maintenance personnel, only one It is time-consuming and laborious to pull one by one, but it is not necessarily effective. The EM415 automotive short circuit/open circuit tester is a special tester specially developed for testing automotive circuits 1Designed to identify and trace wires or cables without damaging the insulation. 2You can also use it in checking for short circuit and locating open circuit and so on. 3With the flexible probe, you can reached wires in congested places. 4Internally protected against power surges and overloads, more dependable to use. 5Transmitter and receiver LEDs show open or short circuit conditions. 6Judge continuity of the cables or wires, and diagnose the break point. 7Comes with a storage bag, easy to carry and store, convenient for using.1 x Set of Car Electric Circuit Tester1 x Manual