Zigbee2mqttt LED Smart Home Livarno Lux

Setup, Configuration and Use Beginners
7

Thats my default setup for such devices. Should also work in your case

Thing mqtt:topic:livingRoomLEDstripe "Hintergrundbeleuchtung im Wohnzimmer"{
    Channels:
        Type switch : state             "Zustand Hintergrundbeleuchtung"       [stateTopic = "zigbee2mqtt/livingRoomLEDstripe", transformationPattern="JS:getZigbeeONOFFstate.js", commandTopic = "zigbee2mqtt/livingRoomLEDstripe/set/state", on="on", off="off"]
        Type number : linkquality       "Link Hintergrundbeleuchtung"          [stateTopic = "zigbee2mqtt/livingRoomLEDstripe", transformationPattern="JS:normZigbeeLink.js"]
        Type number : brightness        "Helligkeit Hintergrundbeleuchtung"    [stateTopic = "zigbee2mqtt/livingRoomLEDstripe", transformationPattern="JSONPATH:$.brightness", commandTopic = "zigbee2mqtt/livingRoomLEDstripe/set/brightness"]
}