Home Security, Insights of CCTV Cameras and Video Surveillance

Home security refers to all the measures that make your home secure against intrusions. The purpose is to secure your family or any tangible or intangible property in your house against any damage/loss.

The home security may correspond to any of the following:

  • Personal Security Practices
  • Online Security Provisions
  • Home Security Systems

Personal Security Practices

From the perspective of personal security practices, we believe that you must be following such habits already. Such habits may include double-checking the locks before leaving your house; not hiding the keys outside of your house; keeping at least one central light switched on when you are outside your house esp. during the night etc. You may also be dealing smartly with your newspaper boy, milk supplier, housemaid, etc. so that they are not aware of your travel itinerary.

Online Security Provisions

You may also be exposed to online security threats. The threats can be system hacking, system jamming, communication noise, data theft, virus/malware attacks, ransomware attack, etc. These threats originate when you install various smart gadgets or WiFi devices etc. and create your home IoI network. A loosely secured home IoT network may give rise to an online intrusion resulting in financial and data loss.

To safeguard your home, you can cautiously surf the internet. You can also install various firewalls or antivirus, anti-malware systems, etc. to take due care from your side. Also, the product OEMs like internet router manufacturers or gadget manufacturers use efficient encryption technologies and other methods like frequency hopping to protect the devices from hacking or network jamming to the best extent possible.

Home Security Systems

In addition to the above, you can also install an Intrusion Detection System. The system will help you to in-principally avoid any physical intrusion attempt and defeat it in the event it occurs. Using such a security system you can monitor the movements, detect any intrusion, defeat the intrusion attempt, and/or trigger alarms or notifications to the concerned folks.

Such systems are a part of home automation and constitute a smart home. These home security systems may include the following:

  • Home Security CCTV Cameras
  • Video Door Bell
  • Smart Locks

Here, in this article, we will limit our discussion to Security cameras only. This will be required to optimally cover the concepts related to the subject and keep your interest in it.

Home Security CCTV Cameras

You can install Security cameras for video surveillance. You can use them inside your house to ensure the safety of your family and keep track of other persons in your house like housemaids…Also, you can deploy them outdoors at the entry gate, in the garden, at your car parking, etc… to keep a watch on the outside view and be able to avoid and defeat any probable intrusion.

Types of Home Security CCTV Camera available in the market

Functions of Home Security CCTV Cameras

These cameras can sense, record, alert, and alarm any unwarranted intrusion on the premises. The CCTV cameras with recording capabilities start recording event-triggered videos and send you the image or message or email notifications on your mobile to alert you against any activity.

You can check the image and also access the camera immediately using your smartphone to see the live view and real-time status of the place. With the remote monitoring of your house using a Mobile CCTV Camera, you can make your home more secure and would be able to manage any intrusion activity more effectively.

These home security CCTV cameras have motion and sound detection sensors, which get activated as soon as they detect any movement or sound. Sometimes you need to adjust the system sensitivity and settings of the Outdoor cameras to prevent and manage false alarms eg. due to pet activity or passing cars if the Outdoor camera is near a window. You can also make a schedule that turns the sensors on and off during specific hours of the day.

At times, you can take advantage of two-way audio communication features in the cameras to warn any intruder trying to break the door or window, etc. You can also install a night vision CCTV camera, which can efficiently capture any object within 25 feet distance at night or in low lighting conditions.

In an integrated security system, CCTV cameras can also communicate with other smart devices to actuate any action like triggering the alarm systems to alert the neighbors, police, and other concerned authorities.

Also, to share the access/controls of your cameras and to enhance their utilities for the family and other possible users like friends and relatives, you can add multiple users who can access the device and see the live footage. You can give full administrator rights or can give limited access to these users to manage the devices.

The additional users have to create their user accounts through the OEM/central app. You can then add these users into your family settings in the mobile app and allocate suitable devices for their access.

Special cameras are also equipped with humidity and temperature sensors, which can help you with other safety-related issues and meet certain of your application-specific requirements.

Home Security CCTV Cameras Setup Options

Depending upon the application and budget, you can select an Analogue or an IP CCTV camera system as the best CCTV camera for the home. You may consider that both the Analogue and IP Cameras support viewing video on a smartphone and produce 4K 1080p HD images. The latest IP Cameras can also produce images up to 30MP.

You can select either a wired or a wireless CCTV camera for your home. The cameras can be standalone or connected to a network for data transmission, storage, and data management. If the camera supports an SD card then you can store the video locally on the camera itself using an SD Card. Generally, you can store 5-7 days’ data in the SD card, so you have to regularly take a separate backup in case you wish to have data older than the past 7 days.

You can also store the data in a Digital Video Recorder (DVR) or a Network Video Recorder (NVR) depending upon whether you are using analog or IP cameras respectively. Both DVR and NVR use the same type of digital hard drives for data storage like Hard Disks or Solid-state Disks, but the data stored through the DVR system is analog data and the data stored through NVR is Digital data.

You may know that you can see the data in video/image form if the data is Analogue data, however, you can make queries also if the data is in digital format. For eg. in car parking, where CCTV cameras are installed, you may have to scroll the whole video to check when a specific car left the parking if the data is in analog format, but, in the case of digital data, you can run a query in the system, based on the car registration number and straightaway locate the instant when the car left the parking. You can also run multiple queries to enhance the value of data captured by the IP cameras.

Another option for you is to store the data in the cloud. Generally, Camera manufacturers offer limited cloud storage for free; but, you can take an additional subscription for cloud storage if you want to retain the data more than 7 days old.

CCTV Camera Network and Installation

Depending upon your technical capabilities and the scale of CCTV setup, you can either install & configure the CCTV cameras by yourself on a DIY basis, or you can outsource CCTV installation services to a suitable service provider or to the camera supplier.

In a large-scale installation which may include physical wiring, camera configuration, and storage setup using DVR/NVR, you may need help from an external service provider, but, if you are using a limited number of WiFi cameras for your home, connected over your Home WiFi internet network, you can easily commission the whole setup by yourself.

You may consider typical network diagrams for Analog and IP CCTV cameras as follows:

Analog CCTV Camera Network Diagram

Analog CCTV Camera Network Diagram

IP CCTV Camera Network Diagram
IP CCTV Camera Network Diagram

Home Security CCTV Cameras Configuration


As a part of the system configuration, you should install the mobile app from the Camera manufacturer on your Smartphone and configure each of your WiFi cameras in the app and WiFi network. In this process, you have to add the camera to the app and scan the QR code showing in the app using your CCTV camera, and then select the WIFi network to complete the setup.


Subsequently, you can add multiple cameras in the same app, which are connected to the same or different WiFi network. In such cases, you may find that the quality of the video is better in case the mobile and cameras are connected to the same WiFi network, but, in the event, that the Smartphone is using its own cellular network and the CCTV camera is using a separate WIFi network, the video may show some delays, buffering, etc…   

Analog and IP Cameras

The total cost of ownership of Analogue Cameras and IP cameras differs substantially. The IP CCTV camera prices are much higher than the corresponding Analogue Camera, hence, you may like to bring certain technical functionalities also into consideration to take an appropriate decision regarding the system purchase and implementation.

Analog cameras use Coaxial cable with BNC/RG59 connectors, which can efficiently transmit the data to the DVR from a distance of under 50m without a need for separate power requirement for the cameras, but, if each of these cables run for more than 50m, you have to arrange a separate power source at camera end to power the cameras. However, in the case of IP cameras, CAT6/CAT5e cable is used which provides POE (Power over Ethernet) functionality and you can transmit data over 250m length between IP Camera and DVR storage. You may need not to arrange a separate power source at the camera end to run the system efficiently.

Also, in the case of Analogue cameras, there has to be a single cable for each camera running from the camera to the DVR. Hence, it becomes quite difficult to manage such a bunch of cables, in the case of multiple cameras installed in the same vicinity. Also, the total quantity of cable used becomes very high, which directly impacts the total CAPEX requirement.

In the case of IP cameras, you can use intermediate routers to run a single CAT6 cable between two routers. As the digital data packets carry their address (source and destination) along with them, a single cable is capable to transmit data from multiple cameras successfully. Each intermediate router reads the source and destination addresses and accordingly routes them to the appropriate destination for data storage or further processing.

Depending upon the installation and future scalability considerations you can purchase 8-channel DVR or 16-channel DVR, and similarly 16-channel NVR or 32-channel NVR. With the analog system, you can go up to 64 cameras per DVR, however, you can add up to 256 IP cameras to one NVR using networking technology.

Benefits of CCTV cameras for Businesses and Houses

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