Midian's TVS-2 Series of high-security rolling code scramblers protect radio communications for Police, Fire, and Emergency users. Midian's encryption modules protect communications from eavesdropping by criminals, media, terrorists and casual listeners. Easy to install plug-in versions of the TVS-2 are available for Motorola, Kenwood, Vertex, Icom, Tait, and Maxon radios. Midian now offers plug-in versions for Motorola Commercial Series radios such as the CM-300, PR-400 and PM-400.