Looking good, though I think those tiny slave windows would bother me too much. :P

While working in a governement facility in a secure room, we had a buzzer for the door at our desks whenever someone rang to get in. I actually wired the buzzer into an Easy button so that hitting it would open the door.

After a while, I had to remove the batteries because it was starting to get annoying hearing "That was easy!" about 20 times a day.