ELK-AEXRFA9 -- Two-Way RF Transceiver with Alarm Engine Bus AdapterTwo Way RF Transceiver with Alarm Engine Bus Adapter The ELK AEXRFA9 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 Two way supervised communication panel acknowledges every transmission Professional grade quality trusted by integrators since 1977 ELK Products technical support available to professional

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