ELK M1 alarm M1RF 304MHz RADIO RECEIVER 101-258The Ness M1RF Receiver is a unique high performance radio receiver designed to operate with up to 144 Ness proprietary radio transmitting devices, including radio keys, radio reed switches and radio PIRs. The M1RF receiver is wired to the M1 via the 4 Wire High Speed Databus and receives signals for connecting radio detectors and radio keys to the Ness M1 cross platform controller. Placed upon the databus the M1RF Receiver may be located anywhere