Check the listing for details. Liftmaster 45ACT / 045ACT Replacement Logic Control Board for Garage Opener. Condition: New. Listed at 109.95 USD. Liftmaster 45ACT Logic Board Replacement Parts Garage Openers 8355, 8557, 8587 Liftmaster 45ACT Logic Board Replacement Parts Garage Openers 8355, 8557, 8587 Liftmaster 45ACT - Logic Board. Liftmaster & Chamberlain Replacement Garage Door Opener Parts.The Chamberlain 45ACT LiftMaster logic board is compatible with a number of LiftMaster models. Equipped with a Learn button, the 45ACT circuit board is not only simple to install, it is also simple to program the remote controls and adjust the travel and drive controls. For step-by-step instructions regarding installing, programming and adjusting your LiftMaster logic board. The garage door opener system models the 45ACT circuit board is compatible with: • LiftMaster 8355 Belt Drive Opener • LiftMaster 8557 Belt Drive Opener • LiftMaster 8587 Chain Drive Opener Additional models are also compatible with the 45ACT logic board. DescriptionThis is a 315MHz Security+ 2.0® Receiver Logic Board Replacement Kit. For use with various LiftMaster® and Chamberlain® AC chain or belt drive garage door openers; manufactured after 2011. The unit will feature a yellow learn button. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.Refer to 050ACTWF Receiver Logic Board Kit for Wi-Fi® Garage Door Openers that are powered by myQ®.Genuine LiftMaster® replacement part.Also known as:45ACT, 1D7675, 041D7675, 041D7656, 001D7675, 41D7675, 41D7656 Payments & Returns Policy