It is a general tendency for people to buy CCTV cameras of the best quality and going for cheaper varieties of digital video recorders (DVR) to save the cost. More than stupidity this is failing the whole purpose of buying the CCTV system. Because while the camera records what is happening in the vicinity you need quality recorders to see what exactly your camera has captured. And if the recorders don't show that clearly your money is lost.
Today you'll find many varieties of DVRs in the market. However, while choosing the CCTV DVR there are quite a few factors that you need to take care of.
CCTV cameras and DVRs are used by people for various reasons. While CCTV recorders are mainly to monitor the entrance of a house those in a shop or a bank are meant to monitor the employees as well as customers. Again, those installed in a police station is to check the body language of suspects and criminals. Systems differ according to your purpose. Hence, before purchasing the system you need to realise why you need it and how long you are planning to record.
There are different types of CCTV DVRs in the market today. For example, the CCTV camera for a home differs from that for a shop. The one for a residential building might need to be worked only when the people are not at home whereas the camera and recorders in a shop might have to work all day to monitor the actions of people. There DVRs that are operated in different ways like motion detected, alarm triggered or timed recordings. Similarly the resolution of the camera can influence the recording, which depends upon the vicinity that the camera covers.
Cost of the DVRs depends, of course, on its type and quality. This in turn is based on what you need it for. To cover the entrance gate of your home you don't the high resolution cameras that would cost you a fortune. Whereas, if you are running a casino where customers of different types frequent, you need really good systems that work without break for hours together. In your hurry to get an inexpensive set CCTV DVR you shouldn't end up purchasing one of substandard quality.
When everything is said and done it's you who need the system. The purpose, type and cost depend on what your needs are. However, if you are not familiar with CCTV system it is always a good idea to consult an expert. You might know people who have already purchased it. Or, you could online and do some research CCTV cameras and DVRs before you actually swipe your credit card for a CCTV system.