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2. Digital video recorder - Wikipedia

   en.wikipedia.org/wiki/Digital_video_recorder

   A digital video recorder ( DVR ), also referred to as a personal video recorder ( PVR) particularly in Canada and British English, is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device. The term includes set-top boxes (STB) with direct ...

3. Network video recorder - Wikipedia

   en.wikipedia.org/wiki/Network_Video_Recorder

   A network video recorder ( NVR) is a specialized computer system that records video [1] to a disk drive, USB flash drive, memory card, or other mass storage device. An NVR itself contains no cameras, but connects to them through a network, typically as part of an IP video surveillance system. NVRs typically have embedded operating systems .

4. 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. However, some wireless security cameras are battery-powered ...

5. Swann TrueBlue 4000 series D1 DVRs pack up to 8 cameras, 1TB ...

   www.engadget.com/2012-08-21-swann-trueblue-4000...

   DVR8-4000 with eight-channel 1 TB D1 DVR and eight PRO-640™ 600 TVL cameras $749.99. Home security may not have reached all-seeing aerial eye proportions, but Swann's TrueBlue 4000 series of D1 ...

6. The best outdoor security camera - Engadget

   www.engadget.com/2019-10-13-the-best-outdoor...

   Arlo also offers a Continuous Video Recording plan, for an additional fee per camera, which lets hardwired Arlo Pro 2 cameras record 24/7 to the cloud, similar to Nest Aware. However, having the ...

7. Closed-circuit television - Wikipedia

   en.wikipedia.org/wiki/Closed-circuit_television

   Surveillance cameras on the corner of a building. Surveillance camera in a residential community. Dome camera in Rotterdam central metro station. Closed-circuit television ( CCTV ), also known as video surveillance, [1] [2] is the use of closed-circuit television cameras to transmit a signal to a specific place, on a limited set of monitors.