Federal Signal Model AV1ST is a combination audible/visual signal. The AV1ST features a 100% polycarbonate housing that is rated for Type 3R rain tight applications. The AV1ST design provides three mounting configurations. The black base will accommodate mounting to a 1/2 NPT pipe a 4 inch octagonal box or any flat surface. The surface mount gasket serves as a template for preparing a flat surface with appropriate mounting holes. All AV1ST units feature a unique twist and lock dome design to allow for tool free access to the strobe tube. The Fresnel lensing provides superior visibility in all directions.
