ELK-AEXRFA3 -- 319.5 MHz RF Receiver with Alarm Engine Bus Adapter319. 5 MHz RF Receiver with Alarm Engine Bus Adapter The ELK AEXRFA3 is an expansion module for the ELK Alarm Engine E27 platform ELK next generation, IP first security system that is modular, scalable, and designed for the connected home and business. Features 319. 5 MHz frequency proven interference resistance and wide receiver compatibility Professional grade quality trusted by integrators since 1977 ELK Products technical support available to

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