nodered_cfg/node_modules/node-red-dashboard/nodes/locales/en-US/ui_button.json

{
  "ui_button": {
    "label": {
      "group": "Group",
      "size": "Size",
      "icon": "Icon",
      "optionalIcon": "optional icon",
      "label": "Label",
      "optionalLabel": "optional label",
      "tooltip": "Tooltip",
      "optionalTooltip": "optional tooltip",
      "color": "Color",
      "optionalColor": "optional text/icon color",
      "background": "Background",
      "optionalBackgroundColor": "optional background color",
      "whenClicked": "When clicked, send:",
      "payload": "Payload",
      "topic": "Topic",
      "emulateClick": "If msg arrives on input, emulate a button click:",
      "className": "Class",
      "classNamePlaceholder": "Optional CSS class name(s) for widget"
    }
  }
}