Well, let us take the mystery out of the light in a garage door opener.
Most if not all modern-day openers include a courtesy light which will automatically switch on when the garage door is activated. After a period of inactivity, the light will switch off to save electricity during periods of non-use.
How long will the light stay on for? This period of time is configurable from only a few seconds to a number of minutes. The standard light bulbs can be replaced with energy-saving bulbs to minimize electricity consumption further.
By the way, the refrigerator light goes…