RAK7431 key features and specifications:
- MCU- STM32L071 industrial-grade MCU with low-power consumption (4uA sleep)
- LoRa
- Semtech SX1272 LoRa transceiver
- Frequencies – RU864, IN865, EU868, US915, AU915, KR920, AS923
- Tx Power – 20dBm (Max)
- LoRaWAN 1.0.3 protocol stack, supports Class A, Class B & C
- Polling mode, transparent mode and packet mode
- RS485
- 6-pin RS485 terminal block
- Support up to 16x RS485 devices, with up to 32 instruction sets
- Baud rate – Configurable 9600 to 115200bps
- Can power RS485 devices via a dedicated output
- USB – 1x Micro USB configuration port
- Misc – Reset key, 3x LEDs
- Input Voltages – 8-48V DC input via 2-pin terminal block; 5V via Micro USB
- Dimensions – 93.6 x 100.3 x 24mm
- Protection Grade – IP31 (Protected against solid objects over 2.5mm
and against vertically falling drops of water or condensation). - Temperature Range – Operating: -30°C ~ 65°C; storage: -40°C ~ 85°C
- Compliance – IEC61000-4-2, IEC61000-4-4 and 18KV HMB ESD protection
The company offers three mounting options with wall, DIN rail, and magnetic mounting, and the device ships with a high-gain antenna.
In a typical setup, several RAK7431 converters would be connected to RS485 sensors over wires, and communicate wirelessly with an LPWAN gateway such as RAK7249 macro outdoor gateway which sends/receives data to/from the cloud over MQTT, and everything would be managed from a cloud management platform such as RAK WisDM.
You’ll find documentation on Rakwireless website, and RAK7431 can be purchased on the company’s online store for $65 plus shipping.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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