CCTV, also known as closed-circuit television, is a security monitor system that enables you to always keep a watchful eye around or in your business. CCTV security systems contain monitors and cameras that allow you to view live events, as well as recorders that archive footage for later use.
Wired Security Cameras
use a series of cables that conduct footage and transmits that footage to a monitor system. Transmission may become weak when the transmission range is over 300 meters.
Analog Security Cameras
They can also display security video on a standard TV, without the need for a DVR. However, they also work with DVRs if that is your personal preference.
IP (Internet Protocol) Cameras
IP cameras have vastly superior capabilities. For instance, these security cameras boast higher and sharper resolution images as well as more flexible features, such as repositioning and remote zoom.
Video Recorders for Security Systems
Recorders are an essential part of CCTV security systems. Every time a CCTV security camera captures something of interest, a recorder archives the footage, allowing you to view it after the fact. There are two primary forms of video recording options. These are:
- DVRs, also known as digital video recorders, are the modern recorder replacement for analog recorders, which relied on the use of videotapes. DVRs convert analog camera footage into a digital format at the desired frames per second and resolution. When the hard disk’s storage becomes full, the new images record over the original images, making it essential to check your recorder as soon as an incident occurs.
- NVRs, also known as network video recorders, are similar to DVRs. However, they are compatible with IP cameras. You connect your NVR and security cameras via a network router or switch. Likewise, you can simply view your NVR footage through a mobile app or web browser.
One additional note for hard drives: you must pick surveillance-grade hard disks for your NVR or DVR. Surveillance-grade hard disks contain more durable components than traditional computer hard drives, which allows them to operate 24/7 if required.
A TV or monitor connected to your NVR or DVR is required to view recorded or live footage from your security cameras. Your CCTV system’s display unit can range from anything between a simple monochrome screen to an HD color monitor. Not mention, if your business has IP cameras, viewing footage remotely from a computer or smartphone is also available.