(This review was collected as part of a promotion.) Yay! All installed! This was very easy to install with the BILT app. Took me about 30 minutes to set everything up and add a code. I installed on old door so it wasnt a lot work. Setting up the code was a little bit complex. However, the instructions were pretty straightforward, so that helped. All i need to do now is find a matching door knob, as it doesn't come with one.  It is battery operated, you need 4 x AA batteries to operate it. Overall, I love it. It looks very sturdy and fancy. I'd recommend this.