January 9, 2018The Telephone Interface RH2818I can automatically answer an incoming phone call and broadcast the caller's voice over the PA system and even to individual zones,and a microphone input is provided for ...view
January 9, 2018This microphone is designed with high quality condenser,matching with controlled circuit. This microphone has ultra-cardioid polar pattern and high sensibility．view
January 9, 2018The 16 Zone Paging Selector RH2816 is able to select up to 16 paging zones,it has a direct microphone input, four remote microphone inputs,one line inputs, internal chime and priority channel mute,can...view
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