For those of you who had experience with the older SkyBell models like me and hated the insanely small annoying screw under the bottom, this has been addressed and is finally nice and easy to install. Setup with the app was much faster and worked the FIRST time in both cases. I would say the longest part is the 5 or so minutes it has to charge the internal battery, after that it only takes a minute or two to get it all setup and configured. The LED lights are extremely helpful in knowing what the device is doing during setup along the way. It comes with a little card showing all the possible light combinations in the box. Weather/ReliabilityMy SkyBell HD has been through the rainy season and I can tell you now that the water had no effect on my device, seems great no matter what the weather was. Occasionally a very windy day will trigger the motion on the SkyBell if the tree in front of my camera is really moving, but it is unusual. Motion DetectionRegarding motion detection I have many comments on this but I will try to keep it on point. I have reached out to SkyBell a couple times on this for assistance and they have been awesome to explain how the motion detection works and why I have experienced certain things happening. My SkyBell device sits in a location that will not be able to see the person until they are practically right on top of it which makes things very tricky for motion detection compared to a standard porch where it can see someone approaching. The SkyBell works by detecting motion the first time, and then if it detects a second trip of the motion within X number of seconds it triggers the alert.