Digital surveillance cameras with Power over Ethernet (PoE) connect to a PoE-enabled network switch or injector through one Ethernet cable, which carries video and control data while supplying electrical power. This single-cable setup can simplify installation by reducing separate power wiring and supports centralized camera connectivity through the network.

Digital surveillance cameras with infrared (IR) night vision, low-light imaging, and built-in illumination help capture usable video when ambient light is limited. High Dynamic Range (HDR) helps preserve image detail in scenes with both bright and dark areas, while larger sensors and adjustable lenses can support image clarity across different viewing conditions.

Dome digital surveillance cameras provide a low-profile option for ceiling or surface mounting, bullet cameras suit directed views on indoor or outdoor walls, and turret cameras offer adjustable positioning with weather-resistant designs for exposed locations. Flexible cameras support table or ceiling placement in adaptable indoor installations, while pan-tilt-zoom cameras add remote directional control and zoom for monitoring broader or changing areas.

Compare 2K, 4MP, and 4K, 8MP, resolution options, along with the viewing angle, which ranges from wide fixed views around 102.4 to 120.6 degrees to adjustable PTZ views of about 45.5 to 99.7 degrees. Also compare fixed lenses with cameras offering 2x or 3x optical zoom, and look for smart detection features such as AI-based event detection for people, vehicles, and animals when targeted alerts are useful.