The room control unit ( version Gira E2 rws glossy ) is used to control ventilation groups, as well as record and display the current room temperature or humidity. The room control unit automatically makes the measured values available to the Digital Strom temperature control and is therefore part of the Digital Strom system. In combination with the respective system and smartphone apps, convenient room temperature control takes place, which can be conveniently operated at home or on the go. To support the full range of functions, the device must be operated on a Digital Strom meter dSM12.