RECEIVER LOGIC BOARD, 390MHz
041A5021-1I is a replacement 390MHz Security+® Receiver Logic Board with End Panel. 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.