Check the listing for details. Chamberlain 41AS050-1 Receiver Logic Circuit Board Assembly Purple Learn Button. Condition: Used. Listed at 58.50 USD. Chamberlain Circuit Board Red Learn Button 41A5389-1, used GUARANTEED to work! Compatible with the following garage door openers with a purple learn button and grey antenna (390MHz operators)... Compatible with Chamberlain Liftmaster low profile screw drive model numbers- 3110- 3220- PD420D- PD422D- PD462D- 9950D You may receive a part ending in a different letter, however it's just a year designation and guaranteed to work! Such as.... 41AS050-1A41AS050-1B41AS050-1C41AS050-1D41AS050-1E41AS050-1F41AS050-1G41AS050-1H41AS050-1M PART# 41AS050-1 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!