Specifications Brand AutelModel Maxicheck ProName OBD2 Scanner Diagnostic InstrumentDisplay TFT color display 320 x 240 dpi Operating temperature 0°C to 60°C 32°F to 140°F Storage temperature 20°C to 70°C 4°F to 158°F External power supply 12 0 to 18 0 V from vehicle battery or adapterDimensions Length 212 mm 8 35 in Width 110 5 mm 4 35 in Height 37 5 mm 1 48 in Features On Board Diagnostics OBD II The first generation of on board diagnostics known as OBD I was developed by the California Air Resources Board ARB and implemented in 1988 to monitorsome emission control components on vehicles As technology evolved and the desire to improve on board diagnostic systems increased a new generation of on board diagnostic systems was developed The second generation of on board diagnostic regulations is called OBD II The OBD II system is designed to monitor emission control systems and key engine components by performing continuous or periodic tests of specific components and vehicle conditions When a problem is detected the OBD II system turns on a warning light MIL on the vehicle s dashboard usually alerting the driver with the phrase Check Engine or Service Engine Soon The system will also store important information about the detected fault so that the technician can accurately find and fix the problem Here are three valuable pieces of information 1 Whether the Malfunction Indicator Light MIL was commanded On or Off 2 What diagno