![CDATA[MeTa® is powered directly by the KNX bus and does not require an external power supply. A menu button and two or four (premium version) electronically labeled, mechanical rocker switches can trigger KNX telegrams (switching, dimming, etc.). The user can also configure the room controller directly on the device, e.g. change the target temperature. The room controller measures the temperature, humidity (standard & premium version) and color intensity. The brightness of the display backlight can be automatically adjusted to the ambient brightness, set to a fixed value or switched off using the built-in brightness sensor. Enertex® MeTa® KNX Standard: - Integrated temperature and humidity sensor - Integrated RGBW light sensor - Two electronically labeled, mechanical rocker switches with max. 16 switching functions - Menu button - External switching contact - Room controller heating and cooling - Dimensions: 90 x 90 x 14.6 mm]]>