The wireless module is a modular product of digital data transmission radio. It refers to a high-performance professional data transmission radio module realized with the help of single-chip microcomputer technology and radio technology. The wireless transceiver module is mainly used to control wireless data transmission and reception through a single-chip microcomputer. Generally, it is FSK, GFSK modulation mode. If it is divided by operating frequency, there are 170MHz, 230MHz, 315MHz, 433MHz, 868MHz, 915MHz, 2.4GHz and so on.

In 2020, China's smart home has entered the AIoT empowerment period, which will comprehensively innovate the form of smart home products.

LoRa technology occupies an important position in the development of the Internet of Things. Because of its ease of construction and deployment, it has become a commonly used Internet of Things dedicated network communication technology. In recent years, due to the maturity of LoRa technology in the leading position, as well as the characteristics of long transmission distance, low power consumption and strong anti-interference, LoRa modules are widely used.

Currently, IoT technology is playing an increasingly important role in environmental monitoring and security protection.

Traffic congestion is a serious problem that almost every big city will face. It has gradually developed from local peak congestion in a city to full-time congestion. First- and second-tier cities are also under the pressure of traffic congestion, and even some third-tier cities have begun to experience traffic congestion.