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  2. Pan–tilt–zoom camera - Wikipedia

    en.wikipedia.org/wiki/Pan–tilt–zoom_camera

    The compact, unobtrusive nature of PTZ cameras allows churches to keep their buildings' aesthetic value intact while still maintaining security. Instead of taking up valuable floor space with a camera operator stationed at each camera, PTZ cameras are strategically placed to record and broadcast events in high definition on projection screens ...

  3. Wireless security camera - Wikipedia

    en.wikipedia.org/wiki/Wireless_security_camera

    Analog wireless is found in three frequencies: 900 MHz, 2.4 GHz, and 5.8 GHz. Currently, the majority of wireless security cameras operate on the 2.4 GHz frequency. Most household routers, cordless phones, video game controllers, and microwaves operate on the 2.4 GHz frequency and may cause interference with a wireless security camera.

  4. List of flat panel display manufacturers - Wikipedia

    en.wikipedia.org/wiki/List_of_flat_panel_display...

    Flat-panel displays are thin panels of glass or plastic used for electronically displaying text, images, or video. Liquid crystal displays (LCD), OLED (organic light emitting diode) and microLED displays are different kinds of flat panel displays. This list includes LCD, OLED and microLED display manufacturers.

  5. Closed-circuit television - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television

    Previous generations of wireless security cameras relied on analogue technology; modern wireless cameras use digital technology with usually more secure and interference-free signals. [167] Wireless mesh networks have been used for connection with the other radios in the same group. [ 168 ]

  6. Liquid-crystal display - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_display

    Small LCD screens are common in LCD projectors and portable consumer devices such as digital cameras, watches, calculators, and mobile telephones, including smartphones. LCD screens have replaced heavy, bulky and less energy-efficient cathode-ray tube (CRT) displays in nearly all applications since the late 2000s to the early 2010s.

  7. The best tablets for seniors in 2025, tested and reviewed - AOL

    www.aol.com/lifestyle/best-tablets-for-seniors...

    It can’t match the raw processing power of these premium devices, but its software is designed to run on low-powered hardware, making it feel very useable and, at $99 (with Lock Screen ...