
EN
TROUBLESHOOTING
FAILURE POSSIBLE SITUATION SOLUTIONS
Five digits appear simultaneously and
change rapidly Battery power low Remove battery compartment lid and
replace battery
The display does not work(only when
changing battery)
Circuit accidental pause caused by poor
voltagewhenxingbattery
Remove battery
and replace it after 30 seconds
Nothing appears on the LCD Battery has poor contact
Battery voltage is under 2.5V
Keep good contact for battery or replace
the battery
The display is in disorder The measurement speed is too fast, more
than 0.6m/s
Keep the measurement speed less than
0.6m/s