LiftMaster 850LM Security+ 2.0 Radio Receiver with long range Doorking Slide Gate Opener Two relays for door or

Two relays for door or gate control

Clear visibility for approaching vehicles

If DC Convenience Open option is installed

100' below ground vehicle sensing probe

Detect Memory - Power interruptions of short duration are ignored

LiftMaster 850LM Security+ 2.0 Radio Receiver with long range Doorking Slide Gate Opener Two relays for door orCLICK HERE FOR MANUAL LiftMaster 850LM Security+ 2. 0 Radio Receiver with long range Three Channel Receiver. Narrow band on 310MHz, 315MHz, and 391MHz frequencies. Long range performance. Remotes for this receiver: 811LM, 813LM, 891LM 892LT, 893LM, 893MAX, 894LT, 895MAX, 890MAX Features Provides convenient access to gated communities, industrial facilities, and commercial sites all with a single transmitter solution Three channels provide expanded