The 3.5-inch smart touch panel is a multifunctional touch panel. It can realize the control of lights, curtains, scenes, air conditioning, HVAC, background music, floor heating and fresh air. It uses a 3.5-inch color TFT capacitive touch screen design with a resolution of 320x240. There are three colors of gold, silver and black in appearance. This panel is used to display status and control various KNX devices, and execute preset functions through graphic buttons on the touch screen. For example, send light switch messages, scene messages, curtain switch, air conditioning control messages, etc. to the bus system to control other devices on the bus. Compared with the ordinary button type panel, the intelligent touch panel can display the screen through the liquid crystal, emit a prompt sound, and can be operated very conveniently and clearly through the human-computer interaction interface.