Automotive Circuit Tester for Short Open Diagnostic Car Wire Tracker 12V 24V Voltage Features： 1、Test the continuity of cables or wires 2、Trace the cables or wires and diagnose the break point 3、Identify the state in the working telephone line 4、Transmit a single or alternating tone across cables or wires and receive signal with tone probe 5、Adjustable audio on tone probe 6、Includes RJ11 jack for telephones and alligator style clips for wires 7、Heavy-duty design for years of trouble free use Specification： 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 locating open circuit and so on. In addition, it can also be used to identify some states of telephone line so that it is more convenient to install, debug, and maintain telephone lines, There are a Sender and a Receiver included in the instrument  Provides an adjustable volume control  Compatible with all common tracing tone sources  Easy cable connection with either RJ-45 jack, patch cord, or alligator clips   Features :  Test the continuity of cables or wires  Trace the cables or wires and diagnose the break point  Identify the state in the working telephone line  Transmit a single or alternating tone across cables or wires and receive signal with tone probe  Adjustable audio on tone probe  Includes RJ11 jack for telephones and alligator style clips for wires  Heavy-duty design for years of trouble free use   Specifications : Operation voltage: 9-42V DC Receiver: On/Off button Test button Probe length: 7 inch flexible probe Package size:26 x 12 x 4 cm Package weight:356g  Package Included: 1*Cable Emitter  1*Cable Receiver  1*RJ11 Cable   1*RJ45 Cable   1*Instruction Manual Package List： 1*Cable Emitter 1*Cable Receiver 1*RJ11 Cable 1*RJ45 Cable 1*Instruction Manual