This Heddolf Keystone CRC315-1K is directly compatible with the LiftMaster 371LM single button visor remote control. This great unit will also work with your Chamberlain or Sears Craftsman 315 MHz Rolling code garage door opener or automatic gate openers.
The Heddolff CRC315-1K is compatible with the following:
LiftMaster: PURPLE Learn Button openers or if your current remote is a 371LM, 372LM, 373LM, 373P, or 370LM
Chamberlain: PURPLE Learn Button openers or if your current remote is a 950D, 950CD, 953D, or 956D
Sears Craftsman: PURPLE Learn Button openers or if your current remote is a 139.53753
-315 MHz Radio Frequency
-Controls one garage door or automatic gate opener
-Compatible with LiftMaster, Chamberlain, and Sears openers made since 2005 with a PURPLE Learn Button (NOT SECURITY+ 2.0 YELLOW LEARN BUTTON)
-Includes Battery (A23), Visor Clip, and Programming Manual
-Dimensions: 3" x 1 3/4" x 1/2"