core/homeassistant/components/switch_as_x/strings.json

{
  "title": "Switch as X",
  "config": {
    "step": {
      "init": {
        "title": "Make a switch a ...",
        "data": {
          "entity_id": "Switch entity",
          "target_domain": "Type"
        }
      }
    }
  }
}