This Liftmaster 890MAX is the direct replacement to the discontinued LiftMaster 370LM mini key chain remote control. The unit is a 3 button Security Formatted 315 MHz mini/key chain remote. This unit can open upto 3 different garage door or automatic gate openers. Programming is simple just press the PURPLE learn button on your opener then press the button on the remote you want to use to open the door/gate. PLEASE NOTE this unit will only work on Liftmaster, Chamberlain, or Sears openers that have a PURPLE learn button. If your opener does not have a PURPLE button or you are not sure please let us know and we would be glad to ensure you get the correct item. Compatible with the following models: -Liftmaster 373P, 371LM, 372LM, 373LM, 374LM -Also compatible with wireless keypad model number 377LM and wireless biometric fingerprint keypad model number 379LM -Compatible with Liftmaster garage door opener model numbers: 3595, 3585, 3575, 3500, 3280, 3265, 3220, 3255, 3245, 3110, 1356, 1355, 1346, 1345, ATS2113X, ATS2113X-CX, HCT501130, LGO50113O, LGO50113L, LGO50113R, LGO50113XR Product Features -315 MHZ Frequency, over 100 billion codes with code rotating technology -Optimize electronic stability and range -Featuring Enhanced Radio Technology (ERT) -3 channel/button transmitter, compatible with models manufactured from 2005 -Open/close one garage door opener or gate opener -Lithium battery (5 years life w/normal use) included -Dimensions:2.25 x 1.25 x 0.5 inches PROGRAMMING MANUAL
