The Whelen L21 beacon offers high-intensity, 360-degree light output, perfect for utility and construction vehicles. This beacon is engineered to perform under the toughest conditions, including harsh weather and heavy-duty environments, making it a reliable solution for vehicles that need superior warning power. Available in high and low dome models, the L21 is easy to install and offers multiple flash patterns to meet various operational needs. Its advanced Super-LED® optics provide consistent light output, while its rugged construction guarantees thousands of hours of continuous use. The L21 combines durability and performance, delivering long-lasting warning protection to keep your vehicle visible and safe on the road.