When the car engine is
started, automotive alternator
charge to car battery voltage is
13.3V. If the car battery
voltage more than 13.3V, it
means the car is start and
camera will be in recording
mode. Different cars, different
battery ageing situation, then
different voltages, 13.3V is the
most common voltage. In
Parking Guard mode, start the
car engine, if the camera can’t
recording, maybe this voltage
is a little higher than the actual
value; if the camera can’t stop
recording automatically after
car engine stop, maybe this
voltage is a little lower than the
actual value, need to make
adjustment.