Have used the Controllino mini as a light control in a riding stable for some years now. Consists of three PIR motion detectors and one light sensor that sense the light level in the stable. There is a little LCD and a easy menu system there you can change max and min level of the light. Wanted light level when there is movement in the stable. And timedelay when no movement is sensed. There is quite a lot of natural light in the stable so then it is daylight outside the system lower the power of the spotlights to save power and lifetime.