Security cameras are surveillance devices that capture video footage of a monitored area for deterrence, monitoring, and forensic evidence. Types include dome, bullet, and PTZ (pan-tilt-zoom) cameras, with options for wired or wireless connectivity, indoor/outdoor use, and varying resolutions (HD, 4K). Key features are night vision (IR), motion detection, and field of view. System selection depends on coverage needs, recording storage (DVR/NVR), and integration requirements. For effective security, cameras must be strategically placed to cover entry points and high-value areas, with consideration for lighting, privacy laws, and data storage security.

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