Liftmaster 41A5483-C Logic Board
The B and C are the months the logic board was made and they are interchangeable.
This replacement logic board is for models 2265 or 2565 that are AC CHAIN DRIVE motors manufactured between 2001 and 2005.
Liftmaster Security + Logic Board 41A5483C or 41A5483B is also the replacement board for sears craftsman model number 139.53985
LM Logic Receiver Board is 390mhz
CD 2pc. Dlx 2001-2005, Red Learn Button Sec+ For Models 2565 and 2265
This is a 390MHz Receiver Logic Board Replacement Kit. For use with various LiftMaster® and Chamberlain® AC Deluxe Chain Drive Garage Door Openers; manufactured 2001 to 2005. The unit will feature a red/orange learn button. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.
Genuine LiftMaster® replacement part. Also known as: 41A5483, 41A5483B, 41A5483C, 041A5483C