Whelen revolutionized emergency warning technology with the invention of the first rotating “anti-collision” beacon in 1952. Today, Whelen continues to push the boundaries of innovation with reliable and powerful lights, sirens, control systems, and software. Whelen encompasses two state-of-the-art facilities in Connecticut and New Hampshire, with over 750,000 square feet of engineering and manufacturing space. With quality as our foundation, we celebrate innovative engineering in every product we produce.