971LM LiftMaster Replacement Garage Door Opener Mini Remote Control 370LM 371LM

1 Key Chain Remote Control .
  • 390mhz and 315mhz frequency
  • Security+® rolling code technology
  • Open/Close garage door without keys or remote
  • 5-year 3V Lithium Battery included
  • Compatible with LiftMaster® Security+® Garage Door Openers and Radio Controls
  • Programming instructions included
REMOTE CONTROL FOR 4 DOORS
1 and 2    works for Purple learn button
3 and 4    works for Red learn button .

Features
Chamberlain Sears LiftMaster Craftsman 971LM 972LM 973LM 970LM Transmitter 3 Button 390 Mhz Security Plus System for use with Orange or Red Learn Button.
Key Chain Style Remote and battery

COMPATIBLE WITH 370LM / 371LM / 372LM / 373LM / 374LM, ALSO COMPATIBLE WITH     CHAMBERLAIN 950CD.956D.953CD Compatible keypad: 377lm. 
compatible with models manufactured AFTER 2005.