Digital GPS Speedometer, New HUD Car Head Up Display with Digital Speed in MPH KPH Universal Fatigue Driving Reminder Overspeed Alarm Trip Meter for All Vehicle White

Overview

u003cspan class=a-text-boldu003eG4S GPS Speed Meter Troubleshooting

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u003cul class=a-unordered-list a-verticalu003eu003cliu003eu003cspan class=a-list-itemu003eu003cspan class=a-text-boldu003e1. No display on the screen, no power

u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eCheck whether USB line is damaged, replace USB line test, and prohibit using voltage higher than 5V
u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eu003cspan class=a-text-boldu003e2.No speed

u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eThe satellite icon flashes indicating the star search state. Please move the car to the open road and wait until the satellite icon stops flashing
u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eu003cspan class=a-text-boldu003e3.The speed is not allowed

u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eCheck unit correct, km KM / mile MPH, (speed unit switch reference settings)
u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eWhen the car leaves the factory, the manufacturer increases the speed displayed on the dashboard by 5-7%, and the international standard is subject to satellite data
u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eThe steps to switch between KM/H and MPH are as follows: After the GPS speedometer is turned on and displayed normally, press and hold the wheel on vertically for 3 seconds to enter item 1 (1-7), then toggle the wheel on to the left or right to switch to item 5, then press the wheel on vertically to enter the speed unit adjustment, toggle the wheel on to the left or right to switch to the speed unit you want (0 for and 1 for miles), and finally press and hold the wheel on vertically for 3 seconds to save and exit.
u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eu003cspan class=a-text-boldu003e4. Driving direction is wrong

u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eThe satellite can't tell your direction when there have no speed, and the speed exceeds 5KM / H
u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eu003cspan class=a-text-boldu003e5. The speed is still displayed after the car is stopped

u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eUnderground parking lot, tunnel, overpass, with shielding will make the signal unstable satellite drift, please drive the car to the open road
u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eu003cspan class=a-text-boldu003e6.Turn off the buzzer

u003c/liu003eu003cliu003eu003cspan class=a-list-itemu003eThe wheel dials left for 2 seconds to turn off the buzzer and dial left again to open the buzzer
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