Not sure tbh. I don’t have one anything close to that model but I had a similar annoyance once.

From a brief read on that link I got the impression there were multiple battery modes and beep reasons. So I can’t really answer that but I hope you can but it probably depends on what it is and how it’s configured.

Edit: for example, it could possibly be beeping because it’s running on battery and not your normal power (2 min between beeps) or, or beeping just because a backup battery is low (30 seconds between beeps) on that particular page.

My gut says it’s mad about a battery and this seems to jive:

https://support.chamberlaingroup.com/s/article/Why-is-the-garage-door-opener-beeping-1484145517818