Home » Receivers » Sears Craftsman Liftmaster Garage Door Opener Universal Upgrade Kit Model 335LM-3T Liftmaster garage door opener 3 transmitter upgrade kit
This item has been discontinued and is no longer available.
Garage door opener receiver and 3 transmitter set upgrade or replacement kit, this kit will upgrade your old format Sears, Liftmaster, Chamberlain, Craftsman to the newest Security+ technology
Compatible with 2 or 3 wire wall control systems, can also use an external 24/110 volt transfomer
Security+ technology, the code between the remote and receiver changes with each use for extra security. Stops code grabbers COLD!
Over 100 billion possible codes makes it impossible to duplicate the frequency
Accepts multiple remote controls utilizing up to 8 functions, and one Security+ keyless entry
Will work with Lift-Master, Sears, Craftsman or Chamberlain remotes with the yellow LED light (Security+ format))
Click here for installation and programming instructions