OBDII scanner for all 12V car with OBDII EOBD protocol For Engine System Diagnostic:The diagnostic tool can help detect the engine ignition, fuel injection, air and fuel ratio, and exhaust emission conditions in Engine system to enhance vehicle performance, save energy and reduce exhaust emission For Transmission Diagnostic: It makes great sense in the safe driving when your car is slipping or difficult to shift. This diagnostic scanner can figure the problems out via reading codes in the Transmission system, or check the health status via live data viewing For SRS System Diagnostic: SRS, safety restraint system, is made up of impact sensors, a control module, and the airbags themselves, and this diagnostic device can detect every electronic parameter to check its health status