Daylight measuring head with bus connection for recording the sky condition with 8 calibrated photocells, the data of the sky condition is made available to automation devices for daylight-dependent control of the artificial light and the blinds of a building, the light sensors are V-lambda-adjusted, built-in temperature-controlled heating to prevent the measuring head cover from fogging, mounting device suitable for mounting on a mounting mast (diameter 42...50mm), housing material acrylic glass, stainless steel 1.4571