Description: Test and find out the connection fault of OBD2 interface when using the tool. Monitor OBD interface voltage and ground wire so that it can display low voltage and fault diagnose stitch. Used for OBD interface signal jumping and quickly test if every diagnostic stitch communication of OBD diagnostic interface is OK. Save automotive data and prevent automotive data losing and electric device locking. Specification: Material: ABS plastic Size Chart: Box: 140*80*35 wire length: 400mm Package Includes: 1 set Note: OBDII Protocol Detector & Break Out Box is our latest R & D automotive fault diagnostic tools. Its mainly used for changing automotive diagnostic OBD stitch to signal judgment level transfer. It can connect with any diagnostic instruments and judge whether car communication is normal. Also it can supply car power during replacing the battery , in order to prevent the body electrical equipment locked automatically.