LiftMaster Mini 3 Button Transmitter 890MAX
If you're always on the go, the LiftMaster 3-Button Mini Remote Control will fit your busy lifestyle. It's small enough to fit right on your keychain, or in your purse or pocket, so you'll always have it when you come home.
--Can control up to three garage door openers or gate operators
--Equipped with Security+2.0 rolling code technology that virtually eliminates radio wave interference
--Compatible with all LiftMaster garage door openers manufactured since January 1993, and all 315MHz Security+ LiftMaster and Elite gate operators
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Product Manual(Acrobat PDF File)