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  2. Home security - Wikipedia

    en.wikipedia.org/wiki/Home_security

    A home security camera system software on a Windows laptop for monitoring. Home security includes both the security hardware placed on a property and individuals' personal security practices. Security hardware includes doors, locks, alarm systems, lighting, motion detectors, and security camera systems. Personal security involves practices like ...

  3. Wireless security camera - Wikipedia

    en.wikipedia.org/wiki/Wireless_security_camera

    Wireless security cameras are closed-circuit television (CCTV) cameras that transmit a video and audio signal to a wireless receiver through a radio band. Many wireless security cameras require at least one cable or wire for power; "wireless" refers to the transmission of video/audio.

  4. Closed-circuit television camera - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television...

    These cameras do not require a video capture card because they work using a digital signal which can be saved directly to a computer. The signal is compressed 5:1, but DVD quality can be achieved with more compression (MPEG-2 is standard for DVD-video, and has a higher compression ratio than 5:1, with a slightly lower video quality than 5:1 at best, and is adjustable for the amount of space to ...

  5. Angel chimes - Wikipedia

    en.wikipedia.org/wiki/Angel_chimes

    Angel chimes. Angel chimes, also known as angel-abra, [according to whom?] are a form of Christmas decoration popular in Europe and North America. [1] They apparently have the same origins as the Christmas pyramid, which functions on the same principle. They differ from these, primarily, in being mass-produced from metal and might have bell ...

  6. Closed-circuit television - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television

    The system is used by Chicago's Office of Emergency Management in case of an emergency call: it detects the caller's location and instantly displays the real-time video feed of the nearest security camera to the operator, not requiring any user intervention. While the system is far too vast to allow complete real-time monitoring, it stores the ...

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