7:42

Home System Test 23: Sweet Mechanical Horns as requested by Random Fire Alarm Systems

8:56

Setting off rare Simplex 4050-80s

22:59

System Test 11 | HUGE CHANGES | Simplex

21:22

System Test 28: AC Devices!

8:45

Fire Alarms in a Recently Closed "Abandoned" Building

1:21

MS5UD system test 10!!! Low frequency

9:29

A Bunch of Bootleg Fire Alarm Devices

15:21

Simplex 4005 System Test 8: I BLEW UP A HORN...