The only one I can recall was an Older Edwards 270-SPO (looked like mid 50s-60s made) installed in a school which was built in the 90s and had a Notifier system in it.
The only one I can recall was an Older Edwards 270-SPO (looked like mid 50s-60s made) installed in a school which was built in the 90s and had a Notifier system in it.