K21-38158 3PH L5 Current Sense Harness Kit
This is a Current Sense Harness (230/460V) Replacement Kit. Compatible with various LiftMaster 3 Phase Logic 5.0 Commercial Door Operators; manufactured after February 2016. Complete replacement kit includes: (2) current sense harnesses of different lengths to accommodate all models. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.
Models manufactured before February 2016, DO NOT feature current sense technology. We highly recommend replacing the existing boards with an updated Logic 5.0 system that utilizes current sense technology. Refer to the following replacement boards for compatible upgrades:
K001D8395 1PH/3PH Logic Board, for all L5 models
K001D8397 3PH/L5 Power Board, 230/460V