NHJYKJ Car HUD Display with OBD & GPS - Digital Speedometer, Auto Reflective Mirror & Security Alarm - Drive More Comfortably - Perfect for Night Driving & Long Road Trips

IntroductionHUD short for head up display.It displays driving dates on the front windshield such as speed,RPM,water temperature,voltage,single mileage etc;to avoid drivers unsafely because of watching the instrument while driving.Drivers can read the driving information instantly , and can always keep the best state on the way with HUD.Product function:1. Decorative lights: Short press the ‘+’ button to turn off the lights, or switch to RPM display2. RPM icon: Short press the ‘+’ button to choose to turn off, or switch to a decorative iconRPM icon: means RPM in OBD mode, and speed bar in GPS mode3. Driving direction: After the vehicle speed exceeds 5KM / H, display the driving direction W=West, N=North, S=South, E=East4. Mufti-function display area: display vehicle speed, water temperature, voltage, number of satellites, travel distance5. Light sensor:HUD can automatically adjust the brightness according to the environment6. OBD system: The OBD light flashes when powered on, press ‘+’ button within 5 seconds to switch to GPS system.GPS system: The GPS light flashes when powered on, press ‘+’ button within 5 seconds to switch to OBD2 system.GPS flashes to search the satellite, once finished, the GPS light stays on for 5 seconds and turns off7.V voltage °, C / F water temperature, KM / H-km unit, MPH-mile unitButton functions：short press:press 1 second and release,long press:long press 5s until the display image changed1. ButtonShort Press (1)In OBD2 mode:to Switch voltage, water temperature, vehicle speed(2)In GPS mode: to Switch voltage, number of satellites, speed(3) to switch menu options or parameter values in menu setting modeLong Press(1)to enter into menu settings ( instructions for Menu 1-12)(2)to save and exit once finished setting2. ButtonShort press(1)to switch the OBD system or GPS system within 5 seconds when the power on scre

Eal data from OBD 2 Port, Display Car Speed, water temperature, Oil temperature, voltage, fuel consumption, RPM, single mileage, total cumulative mileage, driving time, system time, intake pressure, air-fuel ratio, pressure(if your car engine has no turbo funtion, then this function will be invalid), intake pressure,speed up test, brake test, read data stream. Engine Faulty number

Alarm for: Overspeed alarm,High water temperature , Low voltage, Engine fault,

Smart Fuctions: Clear fault code, Switching between kilometer and miles, and Fahrenheit .