Chamberlain 41A5021 Logic Board Genuine Original Equipment Manufacturer (OEM) Part

Works as you would expect. Well made, nothing fancy... Ordered one a few years ago, and it fit perfectly . . .and it's worked fine so far. Needed to replace the one on my other garage door a few weeks ago, and came right back for another. Even comes with directions!

Fixed the problem

Worked great, exactly as expected