Two prefixes are used for MQTT topics on the Spoke Zone MQTT broker.
mon- This is used for data sent from devices to the platform.ctrl- This is used for commands sent from the platform to devices.
It is important to use the correct prefix for MQTT topics, because the Spoke Zone MQTT broker enforces these prefixes for authentication.
These rules only apply to devices that connect to the Spoke Zone MQTT broker; other MQTT brokers will have their own rules.