Sears Craftsman Circuit Board End Panel Red Learn Button 41A5021-4, GUARANTEED!!

Liftmaster Chamberlain Circuit Board End Panel Red Learn Button 41A5021-4LIFETIME WARRANTY NOW AVAILABLE! - Our boards come standard with 60 day free returns and a 1 year free replacement warranty. We offer the option to increase this replacement warranty to LIFETIME by returning your old logic board core. When you purchase this logic board you will receive instructions on how to activate this warranty, but in summary:1. Fill out the card2. Pack up your old board and the card in the included return package3. Return it to us using the included return labelWe will register your warranty when we receive the core and you will get an email from us showing your warranty and how to contact us to make a claim. That's it!----This board is compatible with the following operators....- 139.53964.- 139.53964SRT.The board you receive could have a different letter at the end than the one pictured, but that's just the year designation and doesn't change the function of the board. Interchanges include