The Federal Signal 3T22 and 2T22 are dual-tone, mechanical outdoor warning sirens made by Federal Signal Corporation (formerly Federal Sign and Signal Corporation) from 1952 through the early 1990s. Both have a very recognizable design, with a ten-port rotor (chopper) on the bottom with ten cones (horns) and a 12-port one on top with twelve cones.

2025年3月21日 · The Model 2T22 and Model 3T22 (2 or 3 Tone, 22 horns/ports) are a pair of dual rotor omnidirectional sirens that were produced by Federal Signal over a span of nearly 40 years. These are some of the most well-known and iconic sirens with a distinctive sound and are still commonly found today.

The Federal Thunderbolt 1003 and 3T22 are capable of coding the "Fire" signal using air valves to alternately cycle on and off the air flow through the high and low tones of their dual tone rotors. The 3T22 used air valving on the air intakes of the upper and lower siren rotors.

2022年8月6日 · Here is a quick test of the Hi-Lo function on this 3T22 in McCausland, Iowa. We were out doing some work on this siren and decided to do a quick solenoid test during the sirens programmed daily...

Federal 3T22 The Federal 2T22 siren is a dual tone siren, which is essentially one siren on top of another siren with the siren motor in the middle. Federal added air valves to each air intake of the top and bottom parts of the 2T22 siren to make it possible to alternately (or simultaneously) shut off the air to each air intake of the siren.

Originally Recorded 8/11/2020 © 2022 Brandon Mendel (Reuse allowed with permission)Here’s one of those recordings I’ve been meaning to upload for awhile now...

2020年2月4日 · I don't own any sirens myself, but I'd say the 3T22 is one of the cooler sirens out there, being one of the few with coding dampers and capable of hi-lo signals. The 10/12 port ratio also sounds really nice. They're quite large assembled, but with the horns removed they're a lot more manageable, if tall. Proud owner of a pineapple.

Federal signal 3T22 high low(本人编辑实则就是单音2T22B+3T22B) 2253. 1. 2025-01-03 22:09:48. ... Rainbow Painted Federal Signal Modulator 6024B. THUNDERBOLT1000T. 1.2万 2

The 3T22 was an Omnidirectional Warning Siren by Federal Signal made around the 1960s that contains two Rows of Horns and is the Solenoid Version of the 2T22 and is Able to HI-LO... The 3T22A and 3T22B versions also exist.

The Federal Signal 3T22 / 2T22 was an outdoor warning siren made by Federal Signal Corporation (formerly Federal Sign and Signal Corporation) from 1952 through the early 1990s. It has a very recognizable design, having a ten-port rotor (chopper) on the bottom with ten cones (horns) and a 12-port one on top with twelve cones.