Hello,
Could you please confirm who is acting as the MQTT broker in your current configuration? I assume it’s the RUT956 itself, but it would be great to have that confirmed so we can be sure we’re aligned on the messaging flow.
If RUT acts as a broker, could you also double-check whether the MQTT broker service is enabled and properly configured on the RUT956 as outlined in a similar example on our wiki here:
Additionally, for reference, I’ve tested a similar setup for toggling a relay using MQTTX as the MQTT client, and it worked as expected. Below are the relevant configurations and JSON structure that worked on my end:
I hope this would help or bring any useful insights for your desired setup.
Best regards,