AUTO Mode
During daytime driving, the inside and outside rear view mirrors remain in the DAY mode. The automatic glare-resistant circuit detects the surrounding light through its No. 1 sensor, the rear light through its No. 2 sensor, and determines whether it is day or night through the intensity of the surrounding light. At the same time, the intensity of the glare from the rear is determined through the difference in intensity between the surrounding and rear light.
When the automatic glare-resistant circuit determines that the rear light is too bright, the EC drive circuit applies voltage to the inside and outside rear view mirror cells to vary their reflection rate.
In accordance with the intensity of the rear light, the inside and outside rear view mirror's reflection rate varies. See Fig 1.