A metal tab of the mounting bracket is too broad and should be filed down or reduced. The 2 screws provided are too long for standard doors even armored. I put a flat head screw diameter 5 and 30 mm in length. And apart from that, easy to install and works immediately. User Manual in English. But easy to understand. The camera's menu button to choose the French. And adjustments to its taste is very easy. Very satisfied for a low price.