Check the listing for details. Sears Craftsman Circuit Board End Panel Red Learn Button 41A5021-4, GUARANTEED!!. Condition: Used. Listed at 89.50 USD. Liftmaster Chamberlain Circuit Board End Panel Red Learn Button 41A5021-4 LIFETIME 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 card 2. Pack up your old board and the card in the included return package 3. Return it to us using the included return label We 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.... - 41A5021-4A - 41A5021-4B - 41A5021-4C - 41A5021-4D - 41A5021-4E - 41A5021-4F - 41A5021-4G - 41A5021-4H - 41A5021-4I - 41A5021-4M NOTE: The part you receive WILL NOT be the exact one pictured, however it will be the same part number OR AN INTERCHANGE listed above, in similar condition. Items are used and may have paint, nicks, scratches, missing stickers, fading etc, but they are GUARANTEED to work or your MONEY BACK! - 60 Day Free Returns! - Ships Fast! - Ships Free!