Honda Binzhi rearview mirror heating switch, how to use Binzhi rearview mirror heating?

Honda Binzhi rearview mirror heating switch is shown in the following figure:

The button in the red circle is the rearview mirror heating switch. The heating function of rearview mirror means that when the car is driving in rain, snow, fog and other weather, it can heat the rearview mirror through the electric heating wire embedded behind the lens to ensure the clear surface of the lens.

In fact, the working principle of electric heating rearview mirror is very simple, and the cost is not very high, that is, an electric heating plate (electric heating film) is installed in the lenses of rearview mirrors on both sides. In rainy and snowy weather, the owner turns on the electric heating function of the rearview mirror, and the electric heating plate will be heated to a fixed temperature within a few minutes, generally between 35 and 60 degrees Celsius, thus achieving the effects of heating the lens, defogging and defrosting.