Allows up to 3 Multiload Rotary Modules or other 0-10V controllers to take turns in controlling a single dimmed circuit. Movement of any of the rotary modules, or a change in analogue signal from another controller, routes the signal from that module or controller to the lighting dimmer, so that of the lighting can be taken immediately from any location. When used in conjunction with the MCC (above) all mains switching of the lighting circuit can.