There was a bit of drilling to insert cables but any dust was cleaned up. The digicam is not obtrusive and gives a superb image. Our CCTV systems are installed to the highest regular by our friendly installers who are actually putting in CCTV in and all around We https://www.google.com.cy/url?sa=t&rct=j&q=syndicationapp&esrc=s&source=web&url=https://wirelesssecuritysolution.co.uk