1. This is a latest testing platform for OBDII Protocol Detector & Communication Detection. 2. It can convert the car OBD2 interface into 6 pin for signal detection and electrical level conversion. 3. Connect with any diagnostic tool to tell whether the car communication is good or not. 4. Supply power to the car when you change the battery to avoid the vehicle control module data being lost, automatically locked, key remote control fails or the fault light turns on. Special features:1: Determine whether there is the fault with the OBDII interface. 2: Battery exchange reset tools 3: Voltage transfer OBDII Protocol Detector & Communication Detection: 1. Connect OBDII Break Out Box to the OBDII diagnostic port of the car. 2. After the device displays the voltage. 3. Then connect to the diagnostic tool, when the tool is communicating with the car, the LED indicator of corresponding protocol light up or flash. ( If the CAN protocol is detected, it have the maximum brightness. When the communication is Display testing voltage on the car or truck Display communicating pin number Is an extension of OBD Diagnostic Link Connector () 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. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Photo Color Material:ABS Package Contents: 1 x Car OBD Break Out Box Breakout Tool 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.