Model 7

Model 7, and 7T Original advertisements (?) for the Model 7, circa. late 1970's
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Company	Federal Signal Corporation
Type	Electromechanical
Sound output	113dBc or 108dBc
Documentation	Manual

The Model 7 was a 7 horse power, mechanical, omni-directional siren produced by Federal Signal Corporation. This siren is often confused with the Model 5 due to Federal Signal making a mistake in their naming scheme. Late Model 7s were called Model 5s by Federal Signal even though they were 7HP which pulls it out of line with their standard naming scheme based on horse power ratings.

Model 7 was available in 3 different chopper configurations: 8 port single tone, 12 port single tone, and 9/12 power dual tone. The siren was housed in a very simple enclosure that resembles an air vent found on building roofs. The housing came in either painted steel or stainless steel.