This decoder has been designed to work only with MDS-Digital and AC Plus systems. It has 8 relay outputs, which can be configured as bistable (switching of the relay on each activation) or as timed (closing each relay for a time that can range from 1 to 255 seconds). In "timed mode" a counter starts counting from the moment the relay is activated, and it is deactivated when the chosen time has expired. DIN-10 rail format to facilitate installation inside an electrical equipment box, or they can be screwed directly onto the wall.