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Federal Signal Sirens
| Model L Similar to Sentry's F-2, except with a larger "collar" behind the horn Sample video: https://www.youtube.com/watch?v=JbAGM-qwcFU |
| Fedelcode
Model 1 Easy to identify due to the rainshield and skirts being very close together, sounds like a slower and lower-pitched STH-10 Sample video: https://www.youtube.com/watch?v=Cei6wFPuOzY |
| Fedelcode
Model 2 Quite similar to the regular Model 2, but from the earlier days Sample video: https://www.youtube.com/watch?v=_U_mX_JzzLU |
| Type Mach 5 Somewhat like 2 Model 2s stacked on top of one another, sounds fairly close to a Model 5 or 7. Sample video: https://www.youtube.com/watch?v=YZNQaSGGwmc |
| STH-10 12 horns, has a high-pitched sound and often a long wind-down Sample video: https://www.youtube.com/watch?v=hEOP-UdzFug |
| STL-10 A lower-pitched version of the STH-10 with fewer horns Sample video: https://www.youtube.com/watch?v=4eEoiC9LgbQ |
| Model 5 and
7 Largely identical twins, mostly down to motor horsepower Sample video: https://www.youtube.com/watch?v=HzKZ0_fQr9I |
| Model 2 Pretty high-pitched, has an extra skirt under the rainshield Sample video: https://www.youtube.com/watch?v=1myTsHAIvYc |
| Thunderbolt
1000 and 1000T From the company's early days as Federal Sign and Signal, easily identified by their square horns and horn supports, resembles the 1003 and ACA Hurricane 130. 1000 is single-toned and thus higher-pitched, 1000T is dual-toned. Sample video: https://www.youtube.com/watch?v=35OLwfb3YPE |
| Thunderbolt
1003 Much easier to tell apart than the other two due to solenoids towards the back of the horn, can do high-low and alternating wail tones in addition to alert and attack. Sample video: https://www.youtube.com/watch?v=tFLoakBdfYA |
| Thunderbolt
2000 Very rare gas-powered siren, largely identical to 1000 and 1000T. Sample video: https://www.youtube.com/watch?v=gQLKXKCXfpY |
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RSH-10/Thunderbeam Very unique design, has a rotating metal disk that bounces sound off it Sample video: https://www.youtube.com/watch?v=ryWj-0EZhd8 |
| SD-10 Shaped like a soda can that's been crumpled inwards Sample video: https://www.youtube.com/watch?v=Ph_zeE9L1_A |
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XT22 Identical twin sirens with 2T22 lacking the solenoid boxes on one side, both sound identical 2T22: https://www.youtube.com/watch?v=3IIY3zQvIT8 3T22: https://www.youtube.com/watch?v=nILuu_--G3s |
| 2001-SRN Started with a short round back and no battery backup, came with the rotor mechanism from Thunderbolt, didn't change much over the years Sample video: https://www.youtube.com/watch?v=fhsc6lnj1oM |
| Equinox Prototype for what would be the 2001-130, has a sound similar to the T-128, didn't sell well due to poor performance, basically only identified with "EQUINOX" sticker Sample video: https://www.youtube.com/watch?v=Ph_zeE9L1_A |
| 2001-130 Modified from the SRN, rotor mechanism got reduced Sample video: https://www.youtube.com/watch?v=Ph_zeE9L1_A |
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Modulator Series Digital speaker drivers, up to 8 400 watt cells with the bottom cell being mostly support, names are from number of active cells (1004 has two cells with 1 being active, 2008 has 3 with 2 being active, etc), largely similar to Whelen WPS 2800 and 2900 series, especially with functions Sample video: https://www.youtube.com/watch?v=kON2ThgCAJg |
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508 Newest in the lineup, somewhat like a cross between a T-128 and the 2001 series with the sound being closer to a T-128 Sample video: https://www.youtube.com/watch?v=Qcbgb_wNUqc |
| Eclipse 8 Meant to replace the STH-10, greatly resembles that siren but with square horns, similar to the T-121. Sample video: https://www.youtube.com/watch?v=LOmGqEtncEI |