4G RTU series products launched by Zongheng Intelligent Control. There are rich interface combinations, including RS485/RS232/DI/DO/AI/AO and other interface combinations. It can collect various sensor data, transmit it to the cloud server through the operator’s network, and issue control at the same time. Flexible networking, supporting one-to-one networking and one-to-many networking. At the same time, it also has a very high cost performance, has many product functions, and also supports multiple protocols, including MQTT protocol, JSON protocol, Modbus TCP/IP protocol, etc. The product has a wide range of applications and is often used in remote meter reading, environmental monitoring and management, production workshop automation, etc.