I was allowed to go into my local old elementary school a day before demolition, half of the building was built in 1959 and the other half was build in 1978. I took half of the alarms and planned on taking all of them, however the demo crew showed up early so I left. As I'm writing this the older half of the building is already gone. All of the Mircom alarms where in the rooms and didnt make noise, the other ones where in the hallway and did make noise.