The installation wasnt terrible, but had a little difficulty- it was due to a flaw in our door frame though. I love it now that its installed! A great feature is that you can program multiple passcodes in it, there are 3 of us in our home and its nice that we each have our own code. The only negative thing I can say about this product is that it is louder than I expected it to be, itd be nice to have a volume control for the keypad.