Introducing Whelen’s innovative and economic Ceridian Series. Featuring an all-new low-profile design, the Ceridian Series is engineered for versatility and convenience. Laser etched opaque colored domes provide full customization. A multitude of options are available, including a center speaker and lighted signs. The Ceridian Series is available with SOLO™, DUO™, or TRIO™ Linear Super-LED technology.