About this item(877max Remote)

• The 877 max can be used as a replacement remote control for 80 series, 970 series and 370 series
• Easy programming, can control up to three garage door openers, gate operators or MYQ accessories
• Features security+2.0 rolling code technology that virtually eliminates radio wave interference
• Compatible with : LiftMaster garage door openers manufactured since January 1993 - all models
• LiftMaster 315mhz security+ gate operators - all models

About this item(891LM Remote)

• ONLY works for 1993-current Sears Craftsman, LiftMaster, Chamberlain brand openers with Yellow smart/learn button. CAN'T support Dip Switch ones.
• Easy push-button programming: Universal wireless, programming means no cutting into the garage wiring or installation of an unsightly receiver.
• Multichannel – 1 button design allows control of up to 1 garage door openers at once, which eliminating the trouble of carrying multiple remote.
• Security+ 2.0 and Rolling code technology , the highest level of encryption, prevents hacking and provides peace of mind.
• Long range and stable work, working range of 120 feet, “no waiting” roll-in access
• Note : Only fit for Yellow Learn Button.