Would you like to buy a CCTV system to keep you safe? 90% of CCTV devices are unusable because they have not been selected, planned, or properly installed. This article emphasizes that CCTV Security is a job for professionals and needs professionals to be designed and installed. (https://www.jmcsecure.co.uk/)
The best thing you can do is getting a good understanding of the requirement. You should note that the device that fits your neighbor might not be ideal for you. So, before continuing with CCTV systems, you will first have to define your specifications. You must determine which area to protect yourself and whether you need captured footage or live videos and other requirements. (https://www.jmcsecure.co.uk/fever-screening.asp)
In general, these systems would have one or more cameras that are either software or hardware-dependent, and most of them have an image capture facility. (https://www.jmcsecure.co.uk/intruder-alarms.asp). Even though analog cameras find their place in the market and are still being used, digital cameras slowly take up their place in the present market. You will have to determine whether an analog CCTV camera would be the best viable option or whether you should opt for a digital alternative.