Refresh Item when certain MQTT message is received

Setup, Configuration and Use Scripts & Rules
2

don’t the lights publish a state on change?

With an mqtt “thing” there’s a command topic for setting the state and a state topic for receiving a state.

This is pretty close to the setup of a switch:

Bridge mqtt:broker:mqttBroker [ host="192.168.x.x", secure=false ]
{
	Thing topic mqttTest "mqttTest" {
		Channels:
			Type switch : mqttSwitch "MQTTSwitch" [ stateTopic="MQTTSwitch/State", commandTopic="MQTTSwitch/Command" ]
	}
}

Also with zigbee2mqtt there’s a setting, that will push everything to a topic, rather than needing json transformations of every item:

experimental:
  output: attribute

Source: Zigbee2mqtt revisited: No more ugly transformations