There was a little drilling to insert cables but any dust was cleaned up. The camera is just not obtrusive and gives an excellent photograph. wether it is a primary four camera create for your private home or greater process at your company premises Infinity can secure it. He Shixiu https://amazingvideosview.blogspot.cz/search/label/url-HHsGyDomCQKwyFArt3CDokfJX