The gesis® RM series is KNX-based and modular. The functionality of a unit is derived from the nature and number of the extensions added to a base module. A DALI and EnOcean extension module allows communication across systems. The modules are attached to a TH 35 mounting rail and must be installed in a housing. This is usually done in a Wieland system distributor, which enables decentralized and pluggable installation.