Spec Sheet Preview: The Alpha Communications® model AEC200DM AlphaECall 200 series Master Station is designed to provide the intelligent addressable functions of the AlphaEcall ™ 200 series system, with a 7.0" touchscreen for system operation . The AEC200DM is built into a rugged painted metallic case, which can be desk or surface mounted, and is powered by the included plug-in power supply. When connecting multiple AEC200DM's and/or AEC200PC's together contractor shall furnish the required local area n …