System 7000

Main article: Federal Signal Thunderbolt

System 7000
Company	Federal Signal Corporation
Produced	1980s-1990s
Type	Rotational Electromechanical
Sound output	125-130 dB @ 100 ft
Voltage	120, 208-240, or 480 V AC 1 or 3 ph
Succeeded by	Federal Signal 2001

The System 7000 is self-contained version of the Thunderbolt series, with a similar concept to the Thunderbolt 2000. The blower and controls were enclosed inside a large enclosure which also housed a large gasoline-driven AC generator which would be used to power the siren. These were introduced sometime in the 1980s for use in areas where reliable power was unavailable, such as war zones or remote areas. The siren would be driven by standard mainline power when available, switching to the generator when power failed. The enclosure is weather, corrosion and heat resistant, with cooling fans allowing it to operate even in hot, hostile environments. It is also tamper-resistant to prevent vandalism or unauthorized activations, and includes a security system that activates an alarm in the event of somebody breaking in.

The System 7000 came with Thunderbolt 1000, 1000T and 1003 heads, known as the System 7012, 7022, and 7026 respectively. Most known units were System 7026 units in service in Kuwait during the Gulf War and have all since been replaced by Federal Signal Modulator electronic sirens, some of which are mounted on top of the old enclosures. One System 7026 unit is confirmed to still exist, on display at the Kuwait National Office of Civil Defense.

Models

7012

System 7012 utilizes model Thunderbolt 1000 and produces 2 warning signals, Steady and Wail.

7022

System 7022 utilizes model Thunderbolt 1000T. It is nearly identical to 7012, but features a dual-tone chopper.

7026

System 7026 utilizes model Thunderbolt 1003 and produces 6 warning signals, Steady, Alternating Steady, Pulsed Steady, Wail, Alternating Wail, and Pulsed Wail.

A System 7026 sounding off in the City of Kuwait during the Gulf War in 1991.