230V
Chain drives in 230V version are always used when the windows are used only for ventilation. The connection is very simple (just like the connection of tubular motors for blinds). Under "Accessories" at the respective article you will find, for example, pushbuttons, wind/rain detectors, consoles (for some drives these are already included), radio controls and much more.
If the drive has to be connected to a SHEV system, you need the chain drives in 24V version.