We are very happy with this. It replaced an older lock and this is a major upgrade. My husband said it was easy to install, he followed instructions closely and had no issues. It seems to be very well made. The inside lock and unlock switch is nice and works well. This is an attractive lock and we are happy with it for our back door. At night time, if you hit the top button, it lights up the numbers so you can easily enter your code. I recommend this!