The ECM31-B is an industrial-grade programmable control computer based on the Allwinner T113-S chip. It integrates a rich set of interfaces including Ethernet, RS485, CAN, DI, and DO, as well as 4G/WiFi wireless communication. It is suitable for various IoT data acquisition, transmission, and control scenarios. The industrial control computer runs on Ubuntu and provides Node-RED software, enabling visual drag-and-drop programming. By dragging and dropping nodes and configuring connections, users can easily achieve device interconnection, data transfer, and business logic orchestration. A complete development kit and documentation, along with abundant official examples, significantly reduce development time and save project development costs. The product casing is coated with a conformal coating, providing protection against mold, moisture, and salt spray.