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Because network cameras are embedded devices, and do not need to output an analogue signal, resolutions higher than closed-circuit television 'CCTV' analogue cameras are possible. A typical analogue CCTV camera has a PAL (768x576 pixels ) or NTSC (720x480 pixels), whereas network cameras may have VGA (640x480 pixels), SVGA (800x600 pixels) or ...
However, a 2019, 40-year-long systematic review study reported that the most consistent effects of crime reduction of CCTV were in car parks. [42] A more open question is whether most CCTV is cost-effective. While low-quality domestic kits are cheap, the professional installation and maintenance of high definition CCTV is expensive. [43]
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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.
On February 1, 2016, Axis Communications acquired Citilog, a video analytics provider for traffic and transportation security and safety applications. [ 24 ] [ 25 ] On April 30, 2021, Axis Communications announced that it was selling Citilog, citing challenges in finding "desired synergies because of our different go-to-market models."
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