Universal HUD P10 OBD2 Smart Digital Speedometer Meter Car Head Up Display Overspeed Alarm Electronics Automotive Acceorie Features: 1. Available for cars with OBD2 and EUOBD port Car automatic diagnosis system ,plug and play2. TFT LCD multi color smart display3. The first scan will show the vehicle protocol4. The language can be changed5. Multi function display mode or simple function display mode can be switched freely6. Add new functions: accelerating competitive mode ,Brake performance test, can read the entire car data stream information7. Rich Contents:vehicle speed,engine RPM,water temperature,voltage,instantaneous fuel consumption,average fuel consumption,driving distance measurement,driving time ,low voltage alarm,high water temperature alarm,over speed alarm, engine fault code alarm, eliminate the fault code,freely switch between kilometers&miles. Technical Parameters: Environment temperature: -40 + 80 degreeatmospheric preure 86-106KPaRelative Humidity: 10% -95%environmental noise: 60dB AAlarm sound level: 30dB AWorking voltage: 9V ~ 16Vdc 12Vdc / 400mAProduct size: 73 x 68 x 46 cm Package including: 1 x HUD Car Head Up Display1 x OBD Cable1 x User Manual