FM System with Transmission microphone and receiver in separate rooms, including over larger distances. CM-1, the FM system, comprises a transmission microphone and a separate receiver. As a system, the components can be used in separate rooms over a distance of up to 30 m: the person you are communicating with or a keynote speaker wears the microphone about their person or positions it close by, on a table for example. It transmits the recorded signals to the receiver which you are wearing. An audio connection cable also permits direct reception of radio or TV sound. You receive the sound by inductive transmission (teleloop included in the set), via your hearing aid or, optionally, via unobtrusive earphones (accessory). CM-1 supplies three variable radio channels which means that up to three CM-1 systems can be active simultaneously without having any affect on each other.