The DM2000 relay control unit makes it possible both to individually control two rolling shutters through the double button placed near them and to centralize their opening and closing through one or more double buttons placed at appropriate points.
It works only with MAN PRESENT so you have to hold down the button to make the shutters move.
An electromechanical interlock prevents simultaneous control of the shutters from multiple points.
It is possible to connect multiple DM2000 relay controllers to centralize the control of multiple shutters.