The Federal Signal 3T22 was a dual tone, mechanical outdoor warning siren made by Federal Signal Corporation from 1952 through the early 1990s. It uses 2 dampers to create an alternating tone.
Simulation
The Federal Signal 3T22 was a dual tone, mechanical outdoor warning siren made by Federal Signal Corporation from 1952 through the early 1990s. It uses 2 dampers to create an alternating tone.
3t22. Credit to that one person who created the 3t22 model thing. Control panel and control nodes straight from my 1003 hype.
added working dampers
ZA CITY HALL
🙃
improved 3T22 model.