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2. The 8 Best Outdoor Security Cameras for Your Home - AOL

   www.aol.com/lifestyle/7-best-outdoor-security...

   This 2K wireless camera features a 140-degree field of view, with four IR LEDs for clear night vision recording. It also features two-way audio, so you can hear and address someone standing outside.

3. 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 ...

4. List of digital camera brands - Wikipedia

   en.wikipedia.org/wiki/List_of_digital_camera_brands

   IP Cameras. Ranging from various megapixel and types of cameras. Commercial & Small Business cameras. Vivitar: United States: Compact digital cameras Yashica: Japan Film cameras, digital cameras, disposable cameras and night vision goggles Z CAM China Digital Cinema and virtual reality cameras

5. 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.

6. Home security - Wikipedia

   en.wikipedia.org/wiki/Home_security

   Closed-circuit, or CCTV cameras, stream through wired or wireless links. [9] These cameras stream live footage to users, allowing them to watch for suspicious activity. Current cameras feature abilities such as motion detection and two-way audio, allowing users to receive notifications of activity and speak and listen through the camera.

7. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_alarm

   When a signal is received, a trained monitoring professional accesses the on-site digital video recorder (DVR) through an IP link to determine the cause of the activation. For this type of system, the camera input to the DVR reflects the alarm panel's zones and partitioning, which allows personnel to look for an alarm source in multiple areas.