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CCTV is a system that uses video cameras to display and record motions at specific time and places from a place where this device is installed. CCTV stands for Closed Circuit Television, which means using closed signals, unlike regular television that uses broadcast signals. CCTV is mostly used as a complementary security system and is widely used in various places such as military areas, airports, shops, offices and factories. In its development, CCTV has been widely used at homes.

CCTV as a security system consists of the following sections:

  1. These CCTV cameras function as a tool for taking pictures. There are several types of camera which is distinguished in terms of quality, usage and function. There are two main categories, namely :
    • Analog CCTV Camera
    • Network CCTV Camera
  2. DVR (Digital Video Recorder). A CCTV camera records all images and sends them into this device. There are two main categories, namely: :
    • Stand Alone DVR
    • PC Card DVR
    We can use many features of DVR as a complementary security device. One of the features is to record all things that happened and are within the range of the camera. The recording is often used in court as a proof. There are various types of DVR that can be used with their different features and specifications. The DVR specification determines how many cameras can be installed and quality of the recording.
  3. Hard Disk Drive (HDD) is recording data storage. This hard disk is installed inside the DVR, the larger the capacity of hard disk the longer time you can keep the recording.
  4. Coaxial Cable is a cable that delivers video signal from CCTV camera to DVR, or from DVR to monitor.
  5. Power Cable is required if the cable of CCTV camera is not long enough to reach the nearest socket.
  6. BNC Connector is attached to coaxial cable.

Benefits of CCTV

  1. Deterrance factor – Criminals are often discouraged if the target has a CCTV camera
  2. Monitoring – CCTV system is useful for monitoring the activities at your home, business place, school, etc.
  3. Improve work performance – it is proven that with CCTV system work performance of employees is improved significantly.
  4. Investigation - CCTV systems are useful to support investigation for crime.
  5. Evidence - CCTV recordings can be used as crime evidence