Alerting alarm messages

In openhab I need to display some alert messages on the ui of the main page, how do I do it, I can’t seem to find a widget that can do it, does anyone know, thanks a lot guys!

Welcome to openHAB!
You can send UI commands to a browser of a device which navigate to a different page or open a popup for example.

  • Create an item which is not linked to a thing.
  • Then open MainUI on the device you wish to receive a display message.
  • Click on „Help&About“ in the left lower corner, scroll down and add the item to „Listen to UI command“
  • From your rule simply send a command to that item:
items.UICommand.sendCommand("navigate:/page/alerts");

You need at least openhab v4.1