[untog]

I'll bite: what happen when the wifi goes out and there's no-one inside the building?

[alexrbarlow]

The door functions as normal becuase this is just an add on! The keypad etc outside works fine.

[kubindurion]

take a look at a photo, apart from the system working as usual from the outside, you can even do a manual override from the inside ;)

[PhoenixWright]

Sounds like you bit off more than you can chew.