Somfy SO9012500 Soliris RTS Sun-Wind Sensor, 24V Automatically extends/retracts a motorized awning based on wind and sunlight Compatible with Somfy's LT RTS CMO and ALTUS RTS motors Adjustable wind threshold (6 to 31 mph) Adjustable sunlight threshold (0 to 50 kilolux) Powered by an included class 2 transformer