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  2. Smart doorbell - Wikipedia

    en.wikipedia.org/wiki/Smart_doorbell

    The smart doorbell lets the home owner use a smartphone app to watch and talk with the visitor by using the doorbell's built-in high-definition infrared camera and microphone. They can be either battery operated or wired. [1] Some smart doorbells also allow the user to open the door remotely using a smart lock. [2]

  3. Doorbell - Wikipedia

    en.wikipedia.org/wiki/Doorbell

    Doorbell at the entrance of Chetham's Library, Manchester, England Sound of a two-tone mechanical doorbell. A doorbell is a signaling device typically placed near a door to a building's entrance. When a visitor presses a button, the bell rings inside the building, alerting the occupant to the presence of the visitor. Although the first ...

  4. Video door-phone - Wikipedia

    en.wikipedia.org/wiki/Video_door-phone

    Video door entry consists of both outside and indoor elements: an outdoor panel on the outside, an electronic lock release, and an indoor monitor. The outdoor panel or street panel is installed beside the entrance door or gateway and incorporates different elements ready for use in any climate conditions: one or several pushbuttons to make the call (usually one per home or apartment), a micro ...

  5. Alien and Sedition Acts - Wikipedia

    en.wikipedia.org/wiki/Alien_and_Sedition_Acts

    Alien Friends Act of 1798. The Alien and Sedition Acts were a set of four laws enacted in 1798 that applied restrictions to immigration and speech in the United States. [a] The Naturalization Act of 1798 increased the requirements to seek citizenship, the Alien Friends Act of 1798 allowed the president to imprison and deport non-citizens, the Alien Enemies Act of 1798 gave the president ...

  6. The Doorbell Rang - Wikipedia

    en.wikipedia.org/wiki/The_Doorbell_Rang

    The Doorbell Rang generated controversy when it was published, due largely to its unflattering portrayal of the FBI, its director and agents. It was published at a time when the public's attitude toward the FBI was turning critical, not long after Robert F. Kennedy and J. Edgar Hoover clashed and the Bureau was coming under fire for its ...