Liftmaster K001d8395 Logic Board L5 (K001d8075-1) This is a replacement 1 Phase and 3 Phase 5.0 Logic Board with Current Senso. Compatible with all LiftMaster 1PH or 3PH Logic 5.0 commercial door operators. This L5 board features Current Sense technology and is required for all 3PH operator models; manufactured after April 2016. Please check the manual or replacement parts diagram for specific information before ordering to ensure compatibility. This logic board is the replacement for the following legacy L5 logic board: K001D8075-1.