VJOYCAR GPS Speedometer for Car, Universal HUD Head Up Display Digital Speed Odometer MPH/KMH Speedometer
Main Function :
1.Set/On/Off over-speed alarm
A. Press Enter button once, show 001.
B. Adjust the alarm speed rate with the toggle switch.
C. The default alarm speed rate is 120 km /H, a impossible high value which you cant drive means off.
2.Driving speed calibration
A. Press Enter button twice, show 002.
B. Adjust the speed rate with toggle switch, default rate is 005, the range is -20 to 20. if you want to
increase the display speed by 1KM/H, adjust rate to 006, if you want to decrease it by 1KM/H, adjust rate to 004, and so on.
3.Set the GPS Speedometer unit (KM or Mile):
A. Long press the "Enter" button, when the left side of the screen lights up "ML" means the speed is displayed in miles.
B. Long press the “Enter” button, when the left side of the screen lights up, "KM" means the speed is displayed in kilometers.
More functions:
Total Mileage(Odometer) Display, Altitude value calibration, Time zone calibration, Screen display Settings, Factory defaults, Fatigue Driving Alarm. Pls refer to user manual or email to us directly.