RAK2461 downlink commands

Hello,
I have a RAK2461 with 4 outputs controlling relays. I am using Chirpstack and want to send a downlink (via MQTT) to the RAK2461 to turn the relays on and off.
I cannot work out from the documentation what the message structure should be. Am I right in thinking I should send the message on fPort 10 - or is that just for configuring the RAK2461?

Thanks for your help

Hello @markstanley Unfortunatelly this is not well documenated. Our team will update the docs asap.

You can control the DO outputs like this:
For Example: DO1 has channel ID D1 (209 decimal).
fPort to be used for DO commands is 1.

Action FPort HEX payload
Switch DO1 ON 1 D10101
Switch DO1 OFF 1 D10100

D1 01 01

  • D1 — DO1 channel ID.
  • 01 — Digital output state command.
  • 01 — ON (00 = OFF).

BR