Obstructive Summary Power over Ethernet (PoE) is a networking standard that delivers both data and electrical power over a single Ethernet cable. For security camera installations, PoE eliminates the need for separate power outlets at every camera location — one Cat5e or Cat6 cable run from a PoE switch or injector provides the camera with

Obstructive Summary A Network Video Recorder (NVR) is a dedicated hardware device that receives, processes, stores, and manages video footage from IP security cameras over a network. Unlike a DVR, which encodes analog video internally, an NVR handles streams that are already digitized and compressed by each camera. This architecture delivers higher resolution, simpler cabling

Obstructive Summary Security camera resolution determines how much detail the camera captures in every frame — the higher the resolution, the more pixels available to identify faces, read license plates, and document events. Resolutions range from 720p (1 MP) at the entry level to 4K (8 MP) and beyond at the professional tier. However, higher

Obstructive Summary Traditional infrared (IR) night vision illuminates scenes with invisible 850 nm or 940 nm light and produces black-and-white footage. Color night vision uses larger image sensors, wider aperture lenses, advanced signal processing, or supplemental white-light LEDs to capture full-color footage in low-light conditions. Color images provide significantly more identifying detail — clothing color,

Obstructive Summary Motion detection in security cameras works by analyzing changes in the video frame — either through pixel comparison, passive infrared sensing, or AI-powered object classification — and triggering a recording, alert, or automated action when a defined threshold is exceeded. Pixel-based detection compares sequential frames for changes in brightness or color. PIR sensors