Liftmaster 850LM Security+ Garage Door Opener and Universal Receiver

Provides convenient access to gated communities, industrial facilities, and commercial sites, all with a single transmitter solution. Three channels offer extensive remote control capacity: Channel 1 - 50 remotes, Channel 2 - 20 remotes, Channel 3 - 20 remotes.
Works with 811LM / 811LMX, 813LM / 813LMX, 891LM, 892LT, 893LM, 893MAX, 894LT
Narrowband security + 2.0 Rolling Code and encrypted DIP
Operating temperature -35 to 65°C; storage temperature -40 to 85°C