The functions of the 8 buttons can be freely selected in pairs or individually. Different actuators are supported, allowing you to turn a lamp on or off, dim it, or raise and lower a roller shutter, for example. In combination with the CCU2 central unit, you can execute multiple functions directly with a single button press. For instance, the roller shutters can be lowered while the lights are turned on simultaneously. The use of two AAA batteries ensures a battery life of 2 years.