Bests & Worsts Reviews from Amazon

I've had this lock for about a month now. Installation was simple. The smartkey feature made it easy to re-key it to match my existing Kwikset locks. Programming is fairly simple. You can program and operate it Without a Z-wave controller system. Without a Z-wave system you can manually program two access codes. With a Z-wave controller system you can program up to 30 codes. The lock creates an "Alarm" device as a sub-device on your Z-wave controller which relays a long list of events you can use as triggers. For example, when a user code is entered to unlock the door and it's night, I have the entryway light come on. When the door is locked from the outside, I turn off all lights in the house. You cannot operate it with a handheld controller. You need to have a computerized controller like Mi Casa Verde or Homeseer and your Z-wave interface or USB stick needs to have the latest firmware. I had to update my WDUSB-10 USB stick in order to make it work. While this lock has only 5 buttons vs the 10 buttons on the Schlage lock, The Schlage lock allows only 4 digit combinations where the Kwikset allows 4 to 8 digits. 4 to 8 digit codes from 5 buttons = 390,625 permutations 4 digit codes from 10 buttons = 10,000 permutations Update: I recently bought another one for my garage side door. The product has been updated since the first one I bought. The new unit is functionally identical but the build quality seems much better now. Not that it was bad before but this one seems sturdier overall.