Product characteristics : 1. In the process of using decoder, error can be found and diagnosed OBD connector link 2. You can monitor the OBD interface voltage and ground, showed low voltage. Display diagnostic stitching error 3. Jump for OBD interface signals. Signal lines such as decoder of 7 to 15 vehicles online 4. Rapid detection of OBD2 diagnostic connector whether every stitch of the normal communication. 5. Replace the battery, save the car data function. When replace the battery, plug OBD2 connector into the car, at the same time connect additional power to the control box, so that ensure vehicle data is not lost This OBDII Protocol Detector & Break Out Box has wide range of applications in diagnostics, key programming and chip tuning: To monitor data steam while performing test on vehicle using a Scantool. This makes it possible for you to both execute a test and simultaneously monitor the testing process. Display testing voltage on the car or truck Display communicating pin number Is an extension of OBD Diagnostic Link Connector (DLC) For short circuiting of pins To detect isolated circuits problems Is a power extension cord for small DC testers that need an external power source (maximum 1.2 amps.) To test circuits with a meter or scope. To check Power (Pin 16), Chassis Ground (Pin 4) and Signal Ground (Pin 5) Save ECU data when replacing vehicle battery. Material: plastic colour: As shown Package Contents: 1 x Test Box (B) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.