HUD C100 Head Up Display Car OBD OBD2 Display HUD C100 On-Board Computer Car Speedometer OBD OBD2 HUD Headup Display Car Head Up Display C100(This product Design Patent and Display Images Copyright had been registered with customs record) ProductIntroduction HUD short for Head Up Display,the main function is to display the car dashboard information (e.g.speed,RPM,water temperature,voltage,trip distance etc ),and keep the driver eyes always on road to avoid the dangerous of lowering down head to read the dashboard. Product function: 1.Multi function : speed,engine RPM,water temperature,voltage,driving distance 2.Fatigue driving ,Engine Error 3.Water temperature icon ,voltage icon 4.Light sensor:HUD can automatically adjust the brightness according to the environment 5.MPH=Speed Mile/hour,KM/H=kilometer/hour, MPH=Mile/hour Button functions Short press(1 second)Long press5suntil the display imagecomes Power switch:5s to turn off,again to turn on1.Short Press &lsquo; &rsquo; (1)to switch the display mode (2)to setup menuoptions2.Long Press &lsquo; &rsquo;Turn off the buzzer and press for 2 seconds to turn on the buzzer again.3.Short Press &lsquo; M &rsquo; OBD system : to switch voltage, water temperature,vehicle speed during OBD system, enter into menu setting to switch menu options or parameter valuesLong press&lsquo;M&rsquo; : to enter into menu settings (see instructions for Menu 1-12) and press 5 seconds to save and exit 4.Short Press &lsquo; < &rsquo;Switch speed mode,add menu or parameter after entering settingLong Press &lsquo; < &rsquo;(1)To confirm all of the LED lights can be worked (2)To clear engine fault code Restore setting: Unplug the power supply,long press "'"M"'" button and hold until all of the LED lights on. Fault code clearance: long press "'"