There was a little drilling to insert cables but any dust was cleaned up. The digital camera is not obtrusive and gives an excellent photo. The CCTV software package that runs the components should also be picked out meticulously in the course of installation. They decide how perfectly the https://www.google.com.bd/url?sa=t&rct=j&q=syndicationapp&esrc=s&source=web&url=https://wirelesssecuritysolution.co.uk