Zenitel is launching two new innovations for mixed-use building communication solutions: the Zenitel Display Door intercom (ZDD-1) and the Zenitel Slim Door intercom (ZSD-1). With 125 years of ...
The circuit provides a simple illustration of a door phone intercom system having a two-way communication using the features of LM386 amplifier. Intercom – short for intercommunication, is an ...
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