The NPS6131A is a compact industrial wireless RS485 device server and IoT gateway, ideal for industrial use. It combines functions like a serial device server, Modbus gateway, MQTT gateway, RS485-to-JSON gateway, and virtual COM port tool. Equipped with RS485, 802.11b/g WiFi, and an RJ45 Ethernet port, it ensures reliable connectivity. The NPS6131AI model adds isolation protection to the RS485 interface. It converts RS485 to WiFi TCP/IP and integrates Modbus RTU to TCP, with WiFi functioning as a client or AP. Its DIN-rail mount design supports easy installation, while the wide power input range (10–30VDC) and Virtual COM tool make it a cost-effective, space-saving solution.