The convenience of a wireless system is tempting when you are purchasing a video surveillance system -you have more flexibility in where you install cameras, and can limit the number of cables you need to run by connecting to the cameras using Wi-Fi internet. Wireless cameras still need power source to function

Having the ability to control who comes into your building at any point in time is critically important for the security, safety, and health of those who work or spend time in a facility. Any business or organization with heavy foot traffic will particularly benefit from access control.

surveillance is the monitoring of behavior, activities, or other changing information for the purpose of influencing, managing, directing, or protecting people.This can include observation from a distance by means of electronic equipment (such as closed-circuit television (CCTV) cameras) or interception of electronically transmitted information (such as Internet traffic or phone calls).

Video door-phone (also known as video door entry or video intercom) is a stand-alone intercom system used to manage calls made at the entrance to a building (residential complex, detached family home, workplace, etc.) with access controlled by audio-visual communication between the inside and outside