Thought so. I’m disappointed with the dim in early morning hrs. And need it off for clarity- I’ve adjusted with other cars. Oh well, I’ll adapt- thanks for response.Just checked mine, there is no on/off button. I have not seen a Homelink mirror with a power button in several years. I am curious, why do you want to turn it off? I have never found a time when I would not want the auto-dimming engaged. It does a good job of not being too dim at night even when there is no bright light source.