Your Guide to Installing CCTV Security Cameras

Views 2 Likes Comments Comment
Like if this guide is helpful
Your Guide to Installing CCTV Security Cameras

CCTV security cameras or 'closed circuit television' security cameras derive the name from the fact that they only transmit signal to one specific location or a specific set of monitors. Though most CCTV security camera systems are used in commercial, business, and retail settings, many individuals also use CCTV as a method of home security. According to a University of Cambridge study, the use of CCTV systems helps to significantly reduce crime, as well as aids in the detection and conviction of criminals.

Unfortunately, purchasing CCTV security camera systems can be expensive. Shopping online at websites such as eBay may help mitigate this high cost for some buyers. Such websites may also offer a larger selection to prospective buyers.

Before shopping for CCTV systems, potential buyers should determine what type of system to invest in. Options available to shoppers include different connectivity varieties, numerous camera and lense options, and various recording settings.       

Connectivity Options in CCTV Security Camera Systems

A CCTV security camera system's connectivity options denote whether it is a wired or wireless setup. Wired and wireless options each come with their own pros and cons, which should be thoroughly considered by shoppers before they select a unit.


Wired CCTV security camera systems are, as the name implies, connected to existing recording infrastructure or wired to each other and the recording units via traditional transmitting cables. Wired options are the best choice for those who want to use the security camera system outdoors, but are in an area where inclement weather or other factors may affect the transmitted signal. As wireless technology improves, however, wired options are becoming increasingly rare, as they are sometimes more expensive and difficult to install.


Wireless CCTV security camera systems transmit their feed wirelessly, meaning the cameras themselves need only a power source to begin transmitting. These options are generally cheaper and easier to install than their wired counterparts. However, some environmental conditions or locations interfere with the signal broadcast by wireless units, so shoppers should carefully consider their likely signal strength before opting for wireless units.

Different Camera and Lense Options in CCTV Security Camera Systems

CCTV security camera systems each feature different camera and lense options. The most common options include resolution, angle, tilt, coverage, light sensitivity, and iris choices. Having a wide variety of options is generally more useful on manned camera systems, where the camera's operator can manually control the various settings. Otherwise, before determining which options to purchase in a CCTV security camera, camera system owners should determine which is more important: wide coverage or high detail.

High Resolution

Like traditional cameras, CCTV security cameras come with higher resolutions, including HD capture. High-resolution options improve detail spotting, identification, and detection. Cameras which film in high resolutions or HD are guaranteed to be more expensive than alternative options. A 2 megapixel camera is generally ideal for these purposes, and it easily captures licence plate numbers and other notable details while also having a wide enough range to easily cover an 8-metre wide area.

Lense Angle Options

The angle of a camera lense is measured in millimetres, and it denotes the focal length and field of view. A small field of view is denoted by a large millimetre lense, such as 15 through 100. A wide field of view is denoted by a small millimetre lense, generally ranging from 3.5 through 15. Buyers should select the lense angle based on whether they want to capture a more detailed image of a small area, in which case a large millimetre lense should be used, or a less detailed image of larger spaces, in which case a small millimetre camera should be used.

Tilt Options

Tilt options allow users to remotely tilt or rotate a CCTV camera to capture different fields of view. Some tilt option cameras have the motor connected to a special motion sensor, so that the camera follows the direction of movement. In all other cases, tilt options in CCTV cameras are meant to be employed by a remote controller.

Wide Coverage

Wide coverage in a CCTV security cameras cover areas far wider than more traditional analogue cameras. For example, even a small 2 megapixel camera covers an area six times greater than that of a traditional analogue camera; higher megapixel cameras, of course, improve upon that magnification. Wide coverage megapixel cameras are generally more expensive than analogue camera options, however their rise in popularity means that they are increasingly more common.

Light Sensitivity

Cameras are manufactured for different light sensitivities, which is measured in Lux. Shoppers should be sure to purchase a CCTV security camera manufactured with Lux specifications compatible with the area the camera is intended to be used. Consider the chart below for Lux values compared to recommended environments.

Lux Rating

Recommended Usage

0.001 Lux

Dark, moonless night

0.1 Lux

Full moon night

10 Lux


200 to 400 Lux

Indoor use

1,000 Lux

Overcast day

10,000 to 20,000 Lux

Full daylight and indirect sunlight

100,000 Lux

Direct sunlight

Manufacturer specifications should include a camera's Lux rating and range. Cameras specially made to capture Lux less than 1 operate just as well or better than night vision-only modes.

Iris Options

Shoppers can purchase CCTV cameras featuring both auto and manual iris options. Automatic iris cameras automatically adjust the iris with changing light conditions, which is practical for cameras placed outdoors or those located just inside building entryways. Manual iris cameras are less expensive than their automatic counterparts, and are ideal for uses in which the iris setting need only be set once during its installation.

Different Recording Modes in CCTV Security Camera Systems

Some CCTV security camera systems are outfitted with recording modes different than the traditional colour or black-and-white picture. Common options include infrared, night vision, and audio recording capabilities. In some cases, these cameras capture picture only using these other methods, while some cameras may be outfitted with the option to toggle between the different modes.

Infrared Options

Some CCTV security cameras are capable of recording in infrared. Purchasing an infrared CCTV security camera is ideal for those who do not need high-quality detail in their footage, and simply need to be aware of any warm-bodied movement or intruders.

Night-Vision Recording

Some CCTV cameras feature night-vision recording options. Because night-vision CCTV cameras do not require light to operate, unlike traditional recording, this setting helps obscure the location of any camera units from detection. Night-vision recording is ideal for those who intend for their security camera systems to be used primarily at night, and need to ensure high-quality footage despite low-light conditions.

Audio Recording

Relatively few CCTV cameras record audio as well as video. Depending on the intended use for CCTV security camera systems, employing units which record audio as well as video can decrease crime or increase criminal detection, as well as aid in identification purposes. However, just because units record audio at all does not mean that they record high-quality audio. Reading user reviews on individual units may help shoppers establish what quality of audio units transmit.

Buying CCTV Security Cameras on eBay

CCTV or 'closed circuit television&' security cameras are easy to purchase using eBay. First, go to the eBay homepage or any of eBay's internal pages, and find the search bar. Click the search bar and type in the words which describe the CCTV security camera system best suited to your needs, then press enter. One good example is, "wide-angle CCTV security camera&". Using a general search is recommended, as eBay's settings allow users to refine and organise the listings which appear. Browsers can organise their listings by price, location, and camera features.

In some cases, you may need to communicate with an item's seller regarding a camera's features and capabilities. The eBay software makes it easy to directly ask sellers questions. Simply go to the item's listing page, and click the "Ask a question&" link. This guides you through the process of finding out the information you need to make an informed purchase.


CCTV security cameras come in several different varieties with dozens of different options. First, shoppers should determine if a wired or wireless assembly best meets their needs. Wireless assemblies are typically easier to install, but may have some difficulty transmitting signal given various environmental conditions.

Shoppers should then determine what camera options and recording modes are ideal for their situations. Individuals who intend to have their camera assembly continually manned, for example, may find that units with manual tilt options offer increased visibility and control. Others may prefer units fitted with infrared or night-vision options.

But CCTV security camera systems are oftentimes prohibitively expensive, especially those units with multiple special settings or modes or those comprised of multiple cameras. Shopping at eBay can help buyers find CCTV security cameras precisely fitted to their needs, but these are usually offered at a fraction of the price promoted by security system dealers.

Have something to share, create your own guide... Write a guide
Explore more guides