core/homeassistant/components/rflink/strings.json

{
  "services": {
    "send_command": {
      "description": "Sends device command through RFLink.",
      "fields": {
        "command": {
          "description": "The command to be sent.",
          "name": "Command"
        },
        "device_id": {
          "description": "RFLink device ID.",
          "name": "Device ID"
        }
      },
      "name": "Send command"
    }
  }
}