LiftMaster Receiver Logic Board Assembly 45ACT 100% Brand New Authentic LiftMaster Part. The item "LiftMaster 45ACT Garage Door Opener Logic Control Board" is in sale since Thursday, June 7, 2018. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Garage Doors & Openers\Garage Doors". The seller is "doordocs" and is located in Houston, Texas. This item can be shipped worldwide.