RECEIVER LOGIC BOARD, 390MHz
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041A5021-1I is a 390MHz Security+® Receiver Logic Board with End Panel Replacement Kit. For use with various LiftMaster® and Chamberlain® AC Chain Drive Garage Door Openers; manufactured 1997 to 2005 only. The unit will feature a red/orange learn button. Check the owner's manual or replacement parts diagram for specific part information before ordering to ensure compatibility.