The 850LM is designed for both gated communities and commercial buildings.  This new tri-frequency/three channel Universal Receiver and accompanying remote controls feature Security+ 2.0™ technology.  It utilizes a new, innovative and esclusive narrow band multi-frequency radio, which virtually eliminates radio interference, and eliminates customer call backs due to poor range performance.  3 Channels provide large remote control capacity: channel 1 holds 50 remotes, channel 2 holds 20 remotes, channel 3 holds 20 remotes

Power: 12-24VDC or 12-24VAC Relay Outputs: Output channels - 1 FORM C and 2 FORM A relays Narrow-band on 310 MHz, 315 MHz, and 390 MHz Security+ 2.0™ Rolling Code and Encrypted DIP Operational temperature from -35 to 65 degrees C; Storage temperature from -40 to 85 decrees C Compliant with FCC Part 15