Seeed Studio Studio reComputer R1225 LoRaWAN Gateway & Industrial Controller (US915), CM4-Powered

The gateway ships with SenseCAP Gateway OS pre-installed on the 32GB eMMC. Upon first boot, connect via Ethernet or Wi-Fi and access the web dashboard to configure network settings, connect to a LoRaWAN server like TTN or ChirpStack, and set up the 4G LTE fallback. The SX1302 concentrator is automatically managed by the OS, requiring only antenna connection and server credential input for full gateway operation.

Each of the three RS485 ports uses a 3-pin terminal block (A, B, GND). For Modbus RTU networks, connect the A/B lines to your sensor or PLC, and insert the provided 120Ω resistor across the terminals if required for line termination. Port isolation prevents ground loop issues. Configuration is done via software; you can use pre-installed Node-RED, Python scripts, or a custom Docker container to read/write Modbus registers over these serial interfaces.

The device accepts 9-36V DC or 12-24V AC via the terminal block. For PoE, ensure your switch or injector complies with IEEE 802.3af (delivering up to 12.95W). Connect the PoE-capable Gigabit Ethernet port to the powered source; the gateway will draw power and data simultaneously. Always verify your PoE source's power budget, especially when the internal 4G module and all radios are active under high load.

Yes, the CM4 is socketed on the carrier board. To upgrade, power down the unit, open the enclosure, carefully release the CM4 from its connector, and insert a compatible replacement module (ensuring matching RAM/eMMC specs). After reassembly, you will need to reflash the SenseCAP Gateway OS onto the new module via the dedicated USB-C flashing port, as the OS is stored on the CM4's onboard eMMC.