Agreed with skshl, security CCTV cameras are really effective in the security system. They are an important part of modern security. But be aware and don't try to set your security system by yourself, it can have huge vulnerabilities and can be very ineffective against professional robbers. In my opinion, is better to approach a professional security company like wyesecuritysolutions.co.uk and let them handle all security questions inside and outside of your house.