Replace the malfunctioning logic board on your LiftMaster ATS2113X commercial garage door operator with the economically priced LiftMaster 41A5021-9G-315 logic board/receiver assembly from Garage Door Supply Company. This LiftMaster receiver/logic board assembly is for 315 MHz LiftMaster ATS2113X light-duty commercial operators with purple learn buttons. Circuit boards are the brains of your garage door operator and can go bad during power surges. That's why our advice is to also buy a power surge protector.Product Highlights: