Integrated twilight and motion sensor: the ZigBee-enabled LED outdoor ceiling light Circula with Turnable Warm Its elegant and modern design makes the splash-proof LED outdoor ceiling light Circula a decorative element in the outdoor area even when switched off. It is controlled by the integrated twilight sensor, which turns the light on when it gets dark and turns it off when it gets light. In the default setting, this ceiling lamp with 20% power shines in a warm light, which is not visible to many insects, so they are not attracted to this outdoor light. A motion sensor is also already built in. If this detects movement, the LED module lights up for 30 seconds with 100% and an increased light color. If the Circula is integrated into a smart home system, both the brightness and the color temperature can then be conveniently controlled via smartphone. This requires a ZigBee-based bridge, such as the smik gateway from Paulmann, for which a free app is available. In addition to various Z