Open a door and the room you intend to enter, is dark. You are trying to find the light switch on the wall, a difficult task, when holding shopping bags, an umbrella, and, perhaps, the contents of your mailbox… a most awkward, but common situation!
A combination switch and door handle resolves the problem by not only releasing the door but also creating instant light inside the accessed quarters, this entirely without batteries or cables. Just a gentle twist of the handle generates enough power to set the magic in motion. To install this, no structural changes on the door or in its frame are necessary.