Super Siren Gives Warning Heard Two Miles Away

Media

Part of Super Siren Gives Warning Heard Two Miles Away

Super sirens that can be spotted in the most advantageous positions for spreading “air raid alert” alarms have been designed for installation in New York City. Capable of projecting its sound a distance of two miles, the siren is 36 inches high and operates on four horsepower.

Title (Dublin Core): Super Siren Gives Warning Heard Two Miles Away