7:45

Late 1980s Simplex | Fire Alarm Test #42

4:27

Vintage Mechanical Horns on March Time | Fire Alarm Compilation

6:13

Old School Fire Alarms from the 1960s

13:56

System Test 40| Angry Horns

11:30

Ringing in the new year with Simplex school fire alarms!🎉

6:00

Rare System Sensor MASS Fire Alarms

15:10

Fire Alarm Test 133 | Huge Mix of Signals

8:21

Fire Alarm Test 127 | 4030s 4040s and 4050s