Imperium is Dapol’s own brand of decoder. They have been designed to offer a full range of functions at a reasonable price, complementing the additional features found on Dapol’s models (such as independent lighting) as well as operating with other manufacturers' models equipped with regular directional lighting or without lighting. Imperium are compatible with all models featuring a standard NEM decoder socket and operate with most motor types. MEASUREMENTS LENGTH 15mm WIDTH 9mm HEIGHT 3mm