FreelyControl is a high-tech company dedicated to the R&D, production and sales of IoT monitoring and predictive maintenance systems, which can provide a full set of products for wireless networking automatic monitoring and operation and maintenance systems. The company's core products are wireless controllers, wireless temperature and vibration sensors, wireless temperature and pressure sensors, wireless valve position sensors, wireless temperature and humidity sensors, wireless programmable gateways, etc., which are developed on the basis of summarizing many years of engineering application experience and based on LoRa wireless Internet of Things technology. The system adopts the standard Internet of Things protocol to ensure the openness and scalability of the system, and has built-in standardized applications to achieve rapid deployment.