Wind-Sun sensor (Volo ST) via Nice TTBus with trimmer adjustment of activation thresholds. Programming in linear mode Adjustment of activation thresholds: "Wind" up to 60 km/h and "Sun" up to 60 K-Lux (SI unit of illuminance). Each sensor can control up to 5 control units or motors with on-board control unit connected in parallel, synchronising opening or closing. Control and indicator system: A two-colour LED (green and red; lit, off or flashing) provides information on sensor status (set threshold exceeded, malfunctions etc.). The "Sun" sensor can be disabled by a switch.