If you need to add a lock device to a door on the outside what options are there?
This would be for securing a building where there maybe multiple keys and entry needs to be limited. Changing out the locks will happen so this would be in the mean time.

My first questions are what kind of a building is it, is it ever occupied, and if so what occupancy class?

I have had to do this often.

My first choice is core system.

Takes seconds to change the lock as often as needed. I usually use falcon cores they are a knock off of the arrow system.

https://www.arrowlock.com/en/s...wlock/products/sfic/

If you need real key control you can use a medico removable core.

https://www.medeco.com/en/products/sfic/



One choice is the simplex lock

https://www.gokeyless.com/pa_brand/kaba-simplex/

Thse all work with almost any system that has a standard cylinder for a lock

I am using a Schlage push-button combination lock at the hangar. It can store up to nineteen different codes, so I can assign a different code for each person who needs access to the hangar. Individual codes can be disabled or deleted. I think this is better security than a key, because keys can be duplicated.