This is a Current Sense Harness (230/460/575V) 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.
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
OPEN only (all LiftMaster operators) or SAFETY only (LiftMaster operators with type B2 C2 L2 T T1 or TS control wiring) after vehicle passes over treadle.
The weight of the vehicle compresses an electric switch which sends an open signal to the door.
Requires a 2-wire connection to the operator but does not require power to function