You can directly check with ST about their LoRaWAN dev board with Relay. I have no experience with it and if you back read, @BennuEng has a working relay port for RAK3172. Maybe you can reach out to him to get some hints.
You can directly check with ST about their LoRaWAN dev board with Relay. I have no experience with it and if you back read, @BennuEng has a working relay port for RAK3172. Maybe you can reach out to him to get some hints.