Majesun Universal Digital Auto Car GPS MPH/KM/h HUD Head Up Display Compass Speedometer USB Satellit
Warning: This product working voltage is 5V, and it is forbidden to use a voltage higher than 5V for power supply.GPS Display functions:1. HD display,Small and exquisite.(80*54MM)2. Nano-technologyto eliminate LCD,more clear.3. Auto power on/off: HUD start and off with vehicle started and shutdown, effective protection of the car battery;retaining the manual switch mode,more easy to control HUD.4. Automatic and manual brightness adjustment mode,driving without glare.5. Plug and play, suitable for all cars.Troubleshooting1.The screen without any display, and no powerCheck whether the USB cable is damaged, replace the USB cable for testing, and prohibit the use of voltage higher than 5V for power supply2.Without car SpeedAfter HUD power-on, the satellite icon flashes will start to find the satellite. Please driving the car to the road. It will work after it stops flashing3.Inaccurate Speed a.First check the speed unit is correct or not, the speed unit including KM/H and MPH, please refer to the setting to switch the unit.b.The car manufacturers usually make the dashboard speed 5-7% higher than the ECU. The international standard is based on satellite data.(if the dashboard shows 100, and the device shows the 105, change the default value at 102)4.Driving direction display errorAfter the vehicle speed exceeds 5KM / H, the direction can be displayed normally.5. Speed is still displayed after the car stopsUnder the underground parking lot, tunnel, under the overpass, there will be unstable satellite drift when there is obstruction.6.Turn off the buzzerPush left for 2 seconds to turn off the buzzer, do it again to turn on.