https://developer.mbed.org/platforms/MTS-mDot-F411/
The mDot has SPI, I2C, uart, and digital and analog IOs, so it can be connected to sensors and other devices and can be programmed to report sensor data back to the gateway. This would involve writing an application using libmDot.
https://developer.mbed.org/platforms/MTS-mDot-F411/#lora-stack-libmdot
We have some example applications that provide a good starting point.
https://developer.mbed.org/platforms/MTS-mDot-F411/#example-programs
Hope this helps!
Cheers,
Mike