A Security Camera Installation guide by Nestor Security

security camera installation


The benefits of security camera installation

The 3 main security camera system grades

What are the major parts in a Security camera system?

The different types of security cameras

The different types of security camera systems in terms of power and connectivity?

Other features do you look for in security cameras?


If you are pondering over the necessity of security camera installation for your business, residence, or apartment in Sydney, then this guide will definitely answer your speculations. In this complete guide, you will learn everything needed about security camera installation. Therefore, for you to make the best decision, this guide covers some helpful facts that are of great value. It also provides a comprehensive explanation for security camera installation in New South Wales.

The benefits of security camera installation

Through security camera installation, you will guarantee that you will always be safe and protected, particularly if you live in an enormous city like Sydney, and if you don’t have enough neighbors around. If you have children, or if crimes are common in your neighborhood, then it is highly important that you install at least one security camera for you to be on the lookout for any dangerous incident. Security cameras are also beneficial for small businesses. Actually, statistics have shown that 80% of small businesses that didn’t install any security systems got robbed several times. Therefore, security camera installation can help decrease the chances of dealing with potential thieves at your business’ place. Moreover, surveillance systems allow you to have video footage as a backup in the event that similar incidents occur.

Some other reasons why you should consider security camera installation:

  • If you want to validate that your children are studying in their bedrooms instead of watching TV, or playing games or chatting, or even not in their rooms at all, then security cameras should probably become your new friend!

    Prevention from burglaries: Intruders have a tendency to break into houses and businesses that have no surveillance systems installed. Because, of course, it is easier and the chances to get caught are very slight.

    Protection from burglaries: In addition to being able to go after the burglars once they have committed their crime, you can also prevent them from doing any in the first place. When they will see your security camera, they may reconsider proceeding with their illegal plan. Security camera installation of numerous cameras is also better than only one, as they allow you to get the moves of the entire activity from all angles.

You can find more about who mostly benefit from these features in this previous article, “7 Groups of people have higher need for a security alarm system.

The 3 main security camera system grades

Security camera systems come in 3 main grades: the commercial, the semi-professional, and the professional-grade.

  • Commercial grade camera systems: you can install them all by yourself. The price of such a camera system is very low compared to other grades. This type has many benefits related to quality and durability. Most of them are wireless and with a low-resolution transmission, enormously depending on the internet connection. That’s why they are less preferred by people who really want to secure their homes and businesses.
  • Semi-professional grade camera systems: they are good for homes and small businesses. Their price is medium, and they also have durability and quality features. For instance, major brands like Dahua and Hikvision are semi-professional grade camera systems. Most of these systems come with cables, with a high-resolution camera and storage ability. They also connect to the internet.
  • Professional grade security camera systems: they are the first choice for big businesses. Usually, this system requests several cameras with multiple technologies, that normal households don’t need. Professional security camera systems also have intelligent analytics like recording license plates into a database, face recognition, counting people, and so on.

What are the major parts in a security camera system?

All security camera systems involve 5 main components (listed below). After that, each type or grade has its own different features and technologies that meet different needs.

  • 1- The Camera: It is the “eye” of the system, it captures all visual data and sends them to the “brain” of the system.
  • 2– The brain of the system: or network video recorder, NVR/DVR, is the place where the system processes data. Usually, professional security camera systems must come with either NVR or DVR. However, wireless systems that rely on IP wireless cameras could lack this part.
  • 3- The wires: Ethernet or electricity wires guarantee the connectivity of the system (wired system). However, if the analog system wires are electrical, i.e. PoE system, the wires would be internet cables.
  • 4- The Software: It translates the data visually to your screen. It could be an application on your mobile or a cloud-based web software.
  • 5- The storage space: It could be a cloud storage, a hard disk, or an SD card. The captured and processed data are stored in a hard disk in the NVR or DVR, or in the SD card in an IP camera, or in a web cloud.

The different types of security cameras

  • Dome Camera: A dome camera has a dome-shaped housing. Users commonly use this type of camera for security purposes inside and outside commercial and residential buildings. Dome cameras are durable and are ideal for capturing images of objects. They can also be compact, and their presence is usually hard to notice. Even if one can see where the lens points at, it’s impossible to tamper with it since it has a vandal-resistant rating. Its durability and resistance to vandalism make it a safer choice than other types of security camera housings.
  • Bullet Cameras: Unlike a dome camera, bullet cameras have a built-in rifle. Instead of having a protruding lens, bullet cameras have a pointed focus. Also, they’re more durable and operate outside a home or a business place.
  • Turret: A turret security camera is a small device that has a ball-like structure and a socket design. That way, it can pivot in any direction. This feature allows you to easily install a turret without having to worry about where is the perfect spot for the lens’ positioning. While they’re not as vandal-resistant as dome cameras, turret cameras can still maintain their compact design. They can also be very inconspicuous. Since turret cameras don’t have a glass dome, you don’t have to worry about IR glare. The turret camera has all the advantages of bullet and domes, minus their weak points.
  • Discreet Cameras: Discreet cameras are more hidden than dome and bullet cameras are. Users can place them inside a home or use them as nanny cameras. They are more likely to be hidden, unlike standard surveillance cameras. Not only that, but they are spy cameras as well, a type of video camera that secretly records people’s actions, usually without their consent or knowledge.

General types

  • 1- Fixed lens: The security camera is a high-end, fixed-location camera for surveillance purposes and for general observation. The consumer can program the camera to watch one or more specific areas and receives alerts if anything happens in the selected field of view. It has fewer motors than the varifocal or PTZ cameras, which makes it more durable and less susceptible to damage.
  • 2- Motorized (varifocal VF):  It includes a motor-powered zoom lens, 360-degree rotation, and ultraviolet LEDs for low-light capture. It can move horizontally up to 270 degrees and tilt vertically at 55 degrees. Motorized security cameras are perfect for observing home or business locations. These varifocals VF are normally installed on ceilings and can move in different directions at once. While motorized cameras are security devices, users also use them in many other areas. Many other enterprises have created different models of motorized cameras, but very few were successful.
  • 3- PTZ (pan tilt zoom): A PTZ camera, pan-tilt-zoom, provides a detailed view of all actions and occurrences happening inside your house and around it, thanks to its versatile movement. PTZ cameras have many advantages, one of which is that it allows the users to observe a large zone with some cameras. PTZ is very convenient for commercial buildings, like airports and offices, mostly for its video surveillance feature.

The different types of power sources and connectivity types of security camera systems

In brief, there are 4 types of systems:

  • Wireless Battery D.I.Y Cameras (Commercial)

DIY security cameras are wireless, operating on batteries, and functioning on a wireless network to send recordings to the base station. This security camera installation is easy, but they need charging since they have batteries, and they depend on a speedy Wi-Fi connection. However, they are not trustworthy for a confident security level.

  • Wireless Network with Wired Power (Mostly Commercial)

These cameras are powered through wires, but they connect to Wi-Fi. Since they depend on Wi-Fi networks, they are not highly reliable if you have a weak connection. You should place these cameras in a location with power.

  • Wired Analog Camera (BNC) (Semi-professional and professional)

These cameras are connected by an analog coaxial cable that brings in power and connects them to the DVR. These are good if analog wiring already exists. However, the disadvantage is that they need a cable that runs back to the DVR for each camera, and that they are very old in terms of technology.

  • Wired Ethernet Camera, Connected to IP cameras (Semi-professional and professional)

These cameras are connected by an Ethernet network cable, known as Power over Ethernet, or “PoE”. Most systems in semi-professional and professional grades use this system. They are flexible, stable, and use less cables than analog cameras do. Although they are more expensive, their securing and convenience features are much more guaranteed. Most Hikvision, Dahua, and Bosch camera systems depend on this powering structure.

IP systems (Ethernet wired) vs. analogue wired systems

The differences between the IP system and analogs will clarify more the information you just read above. Read them thoroughly and decide whether you need a wireless system or a wired system:

  • IP or Internet Protocol cameras are devices that connect to an external network video recorder (NVR). These cameras can record and play video data before they reach the NVR. PoE is an alternative method of video security that provides both power and data to the camera without the need for a separate cable. IP security camera systems are becoming the most popular choice for home security. They offer high-resolution videos and images that the consumer can easily access remotely.
  • An IP camera system has many advantages, among which, being easy to set up, secure, and capable of recording high-quality images and videos, which you can remotely access through a smart device, its ability to capture images and videos in low-light conditions, and to cover a wider area than analog cameras do. However, all these benefits increase the cost of IP camera systems and make them more expensive than analog systems.
  • An analog security camera system sends and receives video data in a digital-video-like format, hence the name Digital video recorder, DVR. This digital format is converted into a standard one for future replay. Some analog cameras can connect to the Internet.
  • DVRs are more advantageous than IP cameras in terms of cost, ease of use, and bandwidth consumption. However, they require a coaxial cable and a power cable in comparison to IP cameras.

Wired vs Wireless

It’s important to consider the pros and cons of going wireless or wired.

The wired system

  • Minimizes interference and improves stability
  • Has stable data transmission
  • Can support up to 10 cameras simultaneously
  • Can handle higher bandwidth capacity
  • Has a good image quality
  • Is a good choice for monitoring video with less lag time, especially in Live view


  • Its installation takes a long time due to its multiple cables
  • Is a permanent solution that will not be easily relocated

The wireless system


  • Eliminates the need for cables
  • Is very easy to install
  • Is easier to relocate
  • Includes a built-in microphone
  • Is less concealed since it doesn’t have wires


  • Is completely wireless, but still requires a power source to operate (batteries)
  • Has slower connection speeds
  • Has a potential loss of Wi-Fi signals due to interference
  • Requires strong passwords and encryption to prevent unauthorized access to your system

Other features you look for in security cameras

  • Resolution of the camera

The high resolution of the camera allows the user to easily notice any suspicious activity and detect fine details like plate numbers of cars or faces.

First of all, an image is composed of pixels, so, the more pixels it comprises, the clearer the image. For instance, an 1080-pixel HD resolution comprises 1080 pixels in height and 1920 pixels in width. If we multiply both, we will have 2,073,600 pixels. And such a camera is a 2 megapixel, i.e. 2-million-pixel camera. IP cameras can record and take pictures in different resolutions – ranging from 0.5MP (DVD) to 5MP (super HD) to 8MP (ultra HD) and can even reach 12MP.

In most cases, this type of cameras is usually more expensive. A camera with 4 or 5-megapixel resolution is the best choice for most surveillance systems and provides you with flawless videos and images. Bear in mind that high-resolution footage needs of course more storage space. An example of the most common high-resolution cameras would be the 8-megapixel one, named as well as 4K ultra HD.

In brief, what you look for in security cameras is the ability to easily detect suspicious activities day or night, and be able to zoom in in playback if you want to, and see the smallest details.

  • Video Storage

Video surveillance camera footage is usually stored in a hard drive installed inside the NVR. Some NVR’s can bear up to 1 or 2 hard drive capacity of 8TB to 10TB each. If you would like to upgrade your storage, then you will have to add a second drive. However, if the NVR supports only one hard drive, you will have to remove the old drive and re-install a bigger one.

The drive’s installation into an NVR is easy and only requires a screwdriver to remove the housing. You will find two small cables inside the NVR. You will have to connect/plug these cables into related connections on the hard drive. Then, all you are left to do is to screw the hard drive into the holes at the base of the NVR.

If the hard drive became full while you were recording, the system can be arranged to overwrite old data or stop the recording process. 

  • Internet-Based Cloud Storage

If you want cloud storage security cameras, you will need to subscribe in order to have access to the internet-based cloud. Moreover, if you want to store videos, this will cost you more money as the video data, the original version and the backed-up one, is very large. It is worth noting that some major brands worldwide, like Hikvision and Uniview, do not depend on cloud storage but mainly on hard drives.

  • Memory Card Storage

Some cameras include built-in memory card storage for recording. Yet, this type of camera is more common for backup-storage use if the hard drive fails, or becomes full, or if you record videos without an NVR and directly to the SD card. We all know that the SD cards’ storage capacity is limited, reaching approximately 256 GB. However, the benefit of using memory cards is the fact that you can remove them easily and insert them in another viewing device whenever it is needed. 

  • Night Vision

Since burglaries and suspicious activities tend to occur at night, you’ll obviously look for the night-vision option in a security camera. If it is your case, then you will have to search for cameras that are equipped with infrared LEDs for sharp night vision. When it is completely dark, the camera automatically switches to a monochromatic infrared image. Most of these cameras include infrared ranges of 30 – 50 meters.

  • Starlight technology

When it is totally dark at night or in a closed space without lighting, the starlight technology in a camera allows it to keep recording in color, with the help of a minimal amount of light. This feature helps in identifying things like the color of the clothes worn by the burglars, something that you weren’t able to detect in infrared cameras.

  • Smart Detection

Prominent surveillance and security companies made many investments in research and development, which resulted in the creation of ultra-smart security cameras. Developed smart detection technology in cameras allows the user to have critical events recorded and captured as they happened. With these detections, you can establish instantaneous alerts through push notifications or email with snaps. Some smart detections include:

  • Tripwire or line crossing detection
  • Face Detection
  • Motion Detection
  • Intrusion detection (virtual boxes)
  • Auto Tracking (PTZ – Pan Tilt Zoom cameras)
  • Object Removal Detection
  • People Counting (Great for business analytics)
  • Defocus Detection
  • Heat Map
  • Audio Detection
  • Tamper Detection

Some cameras developed by other companies, like Dahua and Hikvision for example, are most of the time equipped with such smart technologies.


To sum up, after reading thoroughly this all-inclusive guide, you are now well-informed of the grades of camera systems, the differences between wired and wireless systems, and you became more aware of the features you have to look for in cameras, based on your specific needs. Now, all that you have to do is to contact a local installer company that is specialized in camera security systems and select the type that best suits your needs and budget. Below, you can find quick tips for you to find the best company:

  • 1- Look for an Australian-licensed company
  • 2- Read its google reviews
  • 3- Navigate through the company’s website to detect their level of professionalism
  • 4- Check whether they can quickly respond to your request
  • 5- Check whether they do apply Covid-19 safety measures
  • 6- Don’t automatically opt for the lowest prices. Usually, professional companies that have higher-priced products abide by high standards and have specialized teams. Therefore, do bear in mind that even if you believed that the product is somewhat slightly more expensive than you thought, it will certainly be worth investing in.

You can always reach for a piece of expert advice at Nestor Security, and be sure that you are just one click away.

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