Beware that the two buttons on the front of the mirror that turn on the light and turn on the defogger glow blue when in standby mode. I have two of these mirrors installed in my master bathroom,and the blue glow from the buttons is way too bright. I have to keep the bathroom door closed. 
I called the manufacturer and was told that nothing can be done except to turn off the power to the mirrors. 
I would not recommend.