Federal Signal's Model 400ST audible/visual signal combines the effective warning of a strobe light with a Federal Signal Model 350 horn (sold separately).

The Model 400ST includes a fresnel lens, providing 360–degree flash coverage. Its strobe tube produces bright, high–intensity flashes at 400 effective candlepower at 75 flashes per minute.

Available in five dome colors: amber, blue, clear, green and red.

The Model 400ST is ideal for use wherever both audible and visual warning signals are needed. This rugged unit is excellent for industrial use and adaptable to most in–plant signaling needs.

A modern housing design makes the Model 400ST suitable for use in institutional or non–industrial settings requiring an audible/visual alarm system, where heavy–duty industrial equipment might not be appropriate.