The travel nut on LA500DC and LA500DCS gate operators may break when excessive force is applied to the gate such as being struck from a vehicle.
The travel nut can be identified as the white plastic nut that attaches to the internal lead screw of the arm.
The symptom of this problem is that the trolley assembly slides back and forth along the guide slots without mechanical restraint.
LiftMaster has created Trolley Service Kit K75-39337 with all the necessary parts and provides instructions on how to replace a damaged travel nut
within an LA500 arm
Passport Lite Remote Controls provide cost-effective single button access solutions for gate access only or high-capacity commercial properties applications such as employee parking lots and tenant garages.
These remote controls are specifically designed for gate access control and are not compatible with LiftMaster Garage Door Openers.
Conveniently choose from 8 different preset comfort functions to adjust detection fields mounting heights relay hold interval cross traffic optimization direction recognition people/vehicle separation slow motion detection turn on/off filter functions open the door manually and much more
Bidirectional
Fine-tune the motion detector from the ground without guessing if all the settings have been received by the sensor