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Thumbs t-121.jpg
Company American Signal Corporation
Produced ?-present
Type Electromechanical
Sound output 121 dBc at 100 feet
Frequency 500 Hz
Product sheet

The T-121 is a siren manufactured by American Signal Corporation. The siren is also part of the other three sirens in the Tempest Siren Series.

T-121 on ASC's website