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 ...

Any landlord managing multiple apartments should understand the importance of installing an apartment intercom system with door release functionality. From helping you monitor who visits to providing ...

Salto announces the launch of the XS4 Com iGO cloud-based door intercom, an advanced video intercom solution engineered to seamlessly integrate with modern digital lifestyles across residential, ...

[Zak]’s two-floor apartment has a typical door entry control system, but the setup is less than ideally convenient. The wall-mounted telephone-like intercom is downstairs, but [Zak] is usually ...

Packet-based networks, however, provide a high degree of flexibility versus legacy analog systems. IP-based door-entry systems now enable viewers to observe images from any number of surveillance ...