Door lock that opens by a time mechanism?

Question

I have a small office with a metal door that opens from the street to the inside waiting area. I often get to the office in the morning at the time of the appointment but the client might come early. Can I install a door lock that will unlock at a given preset timer ather than by just a key?

Answer 1

Here's what I've come up with.
There is a latch mechanism that mounts in the door jamb that is electrically operated. You've probably seen them, where someone pushes a button to unlock a door remotely. If you had that set up with the button outside the door, and the electric current was supplied through a timer. You would set the timer to supply power only when you wanted to allow access. Your client could then come to the door, press the button, and the door would unlock. You could additionally add a key operated switch outside, which could bypass the timer to allow your access anytime. email me if you need more info. Hope this helps.

Answer 2

maybe I'm not sure
that would be so cool if there was!!