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Eclipse8 Official.jpg
Company Federal Signal Corporation
Produced 2006-Present
Type Electromechanical
Sound output 115 dBc at 100 feet
Preceded by STH-10, STL-10 (2006)
Product sheet


The Eclipse-8 is an omnidirectional, electromechanical siren produced by Federal Signal Corporation. The unit is made from aluminum with 8 square projection horns designed much like the Thunderbolt, but they are a lot smaller and shorter. This unit was made as a direct replacement for the STH-10 siren in 2006, with a much more efficient DC motor making it capable of full battery operation. It’s an 8 port single tone siren producing a sound of 500Hz, joining the legendary Model 2 as a low tone siren, but it’s a much louder and capable siren for covering large areas.