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

name: Deta Fan Controller
primary_entity:
  entity: fan
  dps:
    - id: 1
      type: boolean
      name: switch
    - id: 3
      type: integer
      name: speed
      range:
        min: 1
        max: 3
      mapping:
        - scale: 0.03
    - id: 102
      type: integer
      name: timer
secondary_entities:
  - entity: light
    dps:
      - id: 9
        type: boolean
        name: switch
      - id: 103
        type: integer
        name: timer
  - entity: switch
    name: Master
    dps:
      - id: 101
        type: boolean
        name: switch