The RACUB is a Rako RF to mains and volt-free relay unit. The RACUB provides two, single-pole, double-throw relay switches, enabling control of screens, curtains, blinds, and numerous other relay switched units. Each open/close/up/down command can be activated by any Rako interface. Screen control is simplicity itself: the RACUB will operate as either a volt-free or mains-switching relay. The two independent relays enable the seamless operation of motorised blinds or curtains. Continuous or momentary activation is provided, enabling full or partial opening of any controlled blind or curtain. Gate or garage door activation is also easily performed.