I've seen an explosion on the market of keyless door locks, keyless dead bolts, and so on. Schlage sells a bunch. From the looks of it, most of them are powered either by a 9V battery or some number of AA batteries. Since there's always an actual key slot, you can rest assured that you can still get in even if the battery dies. But what I'm wondering is if there are any keyless locks that don't require a battery? I'm not sure if such a unit exists in the first place. For something like that to even be possible, you'd likely have to run some power wires through the door frame somehow. I am not sure if that is even possible to do, or if any such unit exists. Are they all battery-powered, or is it possible to have a hardwired keyless lock?
Wiring – Is there such a thing as hardwired/powered keyless door locks
door-framelockwiring
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Best Answer
The word you're looking for is "Electric strike".
In this system, the door latch is not powered or operated at all. The door striker plate is. In essence the door frame lets go of the door.
Obviously, since the strike is in the door frame, it's not moving, and running power to it is trivial.