NOT COMPATIBLE WITH GARAGE DOOR OPENERS OR GATE OPENERS THAT DO NOT CURRENTLY USE THE 811LM OR 813LM MODEL REMOTES LiftMaster 811LM 12 Code Switch Digital Encrypted Visor Remote Control For Commercial Doors And Radio Receivers That Are Security+ 2.0. Works With LiftMaster 850LM and 860LM Radio Receivers And Commercial Door Openers That Are Security+ 2.0 Compatible That Use The 811LM or 813LM Remote Controls. The LiftMaster 811LM remote is directly compatible with the 850LM and 860LM radio receivers and commercial openers that use the Security+ 2.0 system. LiftMaster model 811LM is a one button 12 code switch digital encrypted visor remote control that uses the narrow band tri frequencies (310, 315 and 390MHz) for better range and is compatible with LiftMaster 850LM and 860LM radio receivers and commercial openers with Security+ 2.0 technology This remote has 12 on/off code switches and transmits a digital encrypted signal rather than a standard digital signal to provide additional security.