The Rail Controller VR660 allows the creation of autonomous, freely programmable control systems It all depends exactly on the number of channels used, which correspond to the number of control loops Optionally, the display & control module A200R (PN 19 72 51) can be used, which enables not only visualization A safety management of the entire control system. A system can be built with up to 32 universal 1-channel temperature controllers 660 & VR with a display & control unit A200R