Check the listing for details. Chamberlain 41A5389-1B Receiver Logic Circuit Board Assembly Red Learn Button. Condition: Used. Listed at 46.50 USD. Chamberlain 41A5389-1B Receiver Logic Circuit Board Assembly Red Learn Button THE MOUNTING CLIPS ON THESE USED UNITS ALMOST ALWAYS GET BROKEN OFF WHEN REMOVING THEM FROM THE OLD OPERATOR. YOU WILL HAVE TO MOUNT THE BOARDS ON YOUR OWN PANEL OR TAPE THE BOARD IN PLACE. Compatible with the following garage door openers with a red learn button and grey antenna (390MHz operators)... Compatible withChamberlain Liftmaster low profile screw drive model numbers- 2110- 2210 You may receive a part ending in a different letter, however it's just a year designation and guaranteed to work! Such as.... 41A5389-1A41A5389-1B41A5389-1C41A5389-1D41A5389-1E41A5389-1I PART# 41A5389-1 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!