Models
The Thunderbolt was first produced by Federal Enterprises (now Federal Signal Corporation) in 1952 and its use continued through the Cold War.
There were 3 models manufactured, most of them producing approximately 125dB sound pressure level at 100 feet (30 m):
- Model 1000, a single-tone siren capable of two signals (alert and attack). (126dB at 100 feet)
- Model 1000T, a dual-tone version of the 1000.
- Model 1003, a dual-tone version with the added capability of producing a fire signal with solenoid valves.
- Model 2000, A Single tone thunderbolt 1000 with a gasoline powered Roots Blower
The "System 7000" line was a generator back up version of the Thunderbolt. These were available as 3 separate models:
- Model 7012, a single tone siren capable of two signals (alert and attack).
- Model 7022, is the same as Model 7012, but is dual tone.
- Model 7026, which uses a dual-tone Thunderbolt siren to produce six siren signals: wail, pulsed steady, steady, alternating steady, alternating wail, and pulsed wail.
Read more about this topic: Thunderbolt Siren
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