tuya-local/custom_components/tuya_local/devices/smartmi_e1_purifier.yaml

name: Smartmi Air Purifier E1
products:
  - id: pwrmggdhwkz1lnvh
    name: Smartmi E1
primary_entity:
  entity: fan
  translation_key: fan_with_presets
  icon: "mdi:air-purifier"
  dps:
    - id: 1
      name: switch
      type: boolean
      mapping:
        - dps_val: true
          icon: "mdi:air-purifier"
        - dps_val: false
          icon: "mdi:air-purifier-off"
    - id: 3
      name: preset_mode
      type: string
      mapping:
        - dps_val: sleep
          value: Sleep
          icon: "mdi:sleep"
        - dps_val: auto
          value: Normal
          icon: "mdi:air-purifier"
        - dps_val: manual
          value: Strong
          icon: "mdi:wind-power-outline"
    - id: 22
      type: bitfield
      name: fault_code
secondary_entities:
  - entity: light
    name: Indicators
    category: config
    dps:
      - id: 8
        name: switch
        type: boolean
        mapping:
          - dps_val: true
            icon: "mdi:led-on"
          - dps_val: false
            icon: "mdi:led-off"
  - entity: sensor
    name: Filter usage
    category: diagnostic
    icon: "mdi:shield-bug"
    dps:
      - id: 101
        name: sensor
        type: integer
        unit: h
        class: duration