In the evolution of Building Management Systems (BMS) from wired interconnection to wireless intelligence, communication technology has always been the core support. Traditional wired deployment faces pain points such as high construction costs, difficulties in retrofitting old buildings, and insufficient flexibility. In contrast, four major wireless technologies—LoRa, NB-IoT, ZigBee, and 5G—with their differentiated characteristics, precisely adapt to the diversified scenarios of building automation. They build a wireless communication network featuring "seamless sensing and fully interconnected control", serving as a key cornerstone for the implementation of smart buildings.

With the in-depth penetration of the Internet of Things and artificial intelligence technologies, building intelligent control has transformed from traditional automatic control to refinement, intelligence, and greenization. As the "nerve endings" of building intelligent control systems, sensors are responsible for collecting various operational data such as environment, energy consumption, and safety in buildings, providing accurate basis for the decision-making and regulation of intelligent control systems. They are the foundation for realizing intelligent building management, and even more the key to promoting building energy conservation and consumption reduction, and improving living and office experiences.