Examples of Analogue CCTV Camera types

Below are all Analogue (TVI) CCTV cameras suitable for a DVR.
Analogue cameras connect to the DVR (Digital Video Recorder) directly via a coaxial cable and the power for the camera comes from a separate power source. The CCTV camera recordings flow back down the coaxial cable to the DVR whereas the power is via a different section of the cable.
The connectors use BNC connectors and Baluns
The issue with DVR, analogue cameras and Baluns is that it can get very cluttered
Security Cameras and CCTV systems come in various styles and various functions. Some CCTV cameras are fixed lens and others are varifocal which means they can zoom in and out of the subject. 

Some examples of Items Required For An Analogue CCTV System

An analogue CCTV system needs an DVR. This records the data from the cameras. A DVR requires separate power for the cameras. Inside the DVR will be one or two hard drives depending on how many cameras you have and how many days worth of recordings you want. 30 days or a good rule of thumb.

Above is an example of a dome camera. These can be fixed lens or PTZ (Pan, Tilt, Zoom).
This particular example is a 5MP vandal proof, dust resistant camera that offers very good images in very low light..

Above is a fixed lens TVI turret camera. This is a 3k wide angle lens camera with LED lights to provide ambient light and give a colour image at night.
Power for this type of camera comes from a separate source.

TVI bullet cctv camera. 3k smart, hybrid mini camera with LED lights to provide ambient lighting to provide a colour image at night.
It's a fix lens CCTV camera with a wide, 2.8mm lens


It's worth noting that most of these cameras come with an excess of cable that comes from the camera itself. In order to hide that cable and keep connections waterproof, a mounting bracket, or junction box, is needed. 
These junction boxes also need to house the Baluns which are responsible for providing power and data.
CAT5 or CAT 6 cable can be used with the correct Baluns or a special COAX cable can be used.


Below is an example of TVI Analogue CCTV Balun

Below is an example of a TVI Analogue CCTV power supply