If you have a Chamberlain Whisper Drive and it’s beeping, it’s probably the battery back-up system.
That is the only part of the opener that causes the unit to beep when they go bad.
There are several different batteries depending on what generation of whisper drive you have.
If you call our office at 513-821-5095 with the model number, we should be able to help you get a new battery – or help with any other repair the Chamberlain system may need.