Features: It detects and alerts immediately where a circuit is open. You-can quickly locate short circuits, open connections, broken wires. You can also find intermittent circuit problems by-flexing wires or connectors and listening-for a change in the receiver tone. Flexible probe-help reach wires in congested places-and hard-to-reach area. It is designed to identify and trace-wires or cables-without damaging the insulation. It also can be used in checking short circuit, locating open circuit, wire tracing, wire identification and more. Quick and easy: Judge continuity of the cables-or wires, and diagnose the break-point, making your repairs-quick. Specifications: Material:Plastic Size:As Picture Shown Functions: 1. Cable-tracking 2. Find the short-circuit cable 3. Check the cable disconnection point 4. Cable identification Package Includes: 1x Automotive-Short and Open Finder (with battery) 1x Instruction Manual note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.