LED Visual Indicators

DUOYI Auto 16-Pin OBDII Protocol Detector OBD2 Breakout Box Tool. Transform your diagnostic workflow with the DUOYI DY29 OBD2 Breakout Box. This essential tool serves as a critical interface between your vehicle’s OBDII port and scan tool, designed to make signal monitoring, protocol identification, and electrical troubleshooting faster, safer, and more intuitive for professionals and serious enthusiasts alike.

👍Why Choose DUOYI DY29 OBD2 Breakout Box?. The DUOYI OBD2 Breakout Box is a must-have diagnostic tool for automotive professionals and enthusiasts. With its pass-through function, LED indicators, and versatile connectivity, it simplifies OBDII signal monitoring, protocol detection, and troubleshooting—making diagnostics faster, safer, and more efficient.