Replaceable mechanical metal/plastic buttons, built-in temperature sensor, 2-fold input(Binary or NTC), RGB color LED indicator. Full KNX functions including switch, dimming, shutter,scene control, value sending, RGB,RGBW,Color Temp. control, shift register, RTC operation, Multiple operation, Delay mode. Max. 8 group event,8 logic functions. Support icons customization. Installation: wall mounted, fits in 86*86mm, German 60mm, Swiss/Australian /US standard wall boxes.