Electronic device in ceiling installation and parapet duct design with LM bus connection for controlling 2 independent blinds, suitable for manual and automatic control, closing height and slat angle are calculated separately for each blind output and precisely controlled, for blind motors each with max. 2.5A, 230/240VAC, 50/60Hz with a max. connected load of PAC 600VA per blind output, integration with higher-level electronic systems for daylight-dependent, time-based control possible, depending on the mechanical properties and function of the blind, the data set is individually adapted and configured to the connected blind, designed for blind systems with two mechanical limit switches (electronic limit switch function on request). Device mains voltage 230VAC, 50/60Hz, housing material Trirex, halogen-free, transparent, ambient temperature 0 to 50°C, connection of the cables with plug-in screw terminals. Possibility to connect two local, potential-free double buttons for local operation. Automatic measurement and internal use of the blind running time.