This great Sears Craftsman 139.53778 compatible unit from Linear is compatible with older Liftmaster, Chamberlain, and Sears Craftsman garage door or gate openers that use remotes that have 8 or 9 dips switches for programming. Programming is simple, input the switch setting from your opener using the buttons on the remote and you are all set.
This unit can control upto 3 different Lift Master, Chamberlain, Sears Craftsman, or Genie brand openers (all must use dip switch technology).
-390 MHz frequency gate or garage door remote transmitter
-3-channel remote control transmitter
-Use with Lift Master, Sears, or Chamberlain openers with 8 or 9 dip switches
-Also compatible with TrueGuard, Crawford, or Master Mechanic garage door openers
-Includes visor clip and programming instructions.
-Includes heavy dutybattery and built-in LED light to indicate battery strength.
-Dimensions 1/2" x 3" x 1 5/8"
-1 year manufacturer warranty