FEDERAL SIGNAL TWINSONIC LIGHTBAR

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Twinsonic model 12.

The model 12 Twinsonic was the first fully enclosed light bar offered to the public. This light bar took the idea of the visibar and placed the outer rotators under a large polycarbonate lens offered in different colors. The model 12 has 2 full height triple step reflecting cascade mirrors which both face forward. The motor is mounted on the drivers side.

 

 

 

This Twinsonic is a model 12 with dual motors. Photo's courtesy of Eric6913