Features 1. Find errors and diagnose OBD connector link during decoder usage. 2. Monitor voltage and ground of the OBD interface and display low voltage. Show diagnostic connection errors. 3. Access OBD interface signals. Support signal lines for vehicle decoders, compatible with various vehicle models. 4. Quickly check if each pin of the OBD2 diagnostic connector communicates properly. 5. When replacing the battery, connect the OBD2 connector to the vehicle and use an external power supply to the control box to prevent loss of vehicle data. Specification Item Type: OBD Detector Material: ABS Introduction: OBDII Protocol Detector & Break Out Box is mainly used for automotive OBD line signal detection and signal transmission. With a vehicle fault diagnostic tool, it can quickly determine OBD signal reception. Offers alternative signal transfer options when direct connection is not possible. Provides convenient application and helps prevent wiring risks. This OBDII Protocol Detector & Break Out Box is widely used in vehicle diagnostics, key programming, and ECU tuning. Function: Monitor data stream while performing vehicle tests using a scan tool, allowing simultaneous test execution and process monitoring. Display testing voltage on car or truck Display communicating pin number Acts as an extension for OBD Diagnostic Link Connector (DLC) Enable pin short-circuit testing Detect open circuit issues Serve as a power extension for small DC testers requiring external power (up to 1.2 amps) Test circuits using a multimeter or oscilloscope Check Power (Pin 16), Chassis Ground (Pin 4), and Signal Ground (Pin 5) Help preserve ECU data during vehicle battery replacement. Package List 1 x OBD Box 1 x Connection Cable 1 x CD