The 811LM LiftMaster one-button garage door/gate remote from Garage Door Supply Co. is a dip switch-style remote control transmitter with Security+ 2.0 technology. Dual 12-position dip switch programming offers up to 4,096 unique codes.
The narrow band transmission can handle three (310MHz, 315MHz, 390MHz) frequencies simultaneously. This remote, popular at gated communities and shared commercial site entrances, is compatible with LiftMaster 850LM and 860LM receivers. It's compatible only with Security+ 2.0 gate operators.
DOES NOT WORK WITH RESIDENTIAL GARAGE DOOR OPENERS