I work in a small school and want to upgrade our alarm system for events such as lockdowns, fire and other emergencies.
Currently it's an unlucky person ringing a manual bell (during lockdown) or calling out fire…
Quotes to get a wired system are a considerable portion of our budget.
There are 5 buildings that are reasonably close to one another, but all separate structures. The alert needs to be able to be activated from any of the buildings and ideally allow for room to room communication. I also need an external speaker for our outside playground area.
I was wondering if the simplest and easiest to manage solution might be a UHF style radio setup, with a radio (on a charging base) in each room. This would allow anyone in any room to raise an alarm while we are in class. However I would also need to have the message sent to an external speaker if an event was to occur during a lunch time.
I don't know much about radio frequency or whether what i am suggesting is even possible.
Appreciate your advice in advance.