I bought this plus a SmartThings hub. It took me a bit to figure out how to use them together!1. As others have noted, all unlock codes that will be programmed must be the same length. By default it uses 4 digit codes. Personally, I think a longer code is needed for securing your home. IF YOU ARE GOING TO CHANGE THE CODE LENGTH, YOU MUST DO SO *BEFORE* YOU PAIR WITH THE SMARTTHINGS HUB! Long story short, I ended up having to unpair my lock and re-pair to get things to work properly with longer codes... There's a parameter that gets read from the lock related to code length, and as far as I can see it only gets read when you first pair the lock!2. By default the Z-wave does not seem to be operational. You need to use the keypad to "include the lock" in order for it to be detectable by the hub. Maybe that's the normal Z-wave nomenclature, but that wasn't obvious to me that it had anything to do with Z-wave!3. There's some extra capability that needs to be enabled through the SmartThings app. If you go to Marketplace -> SmartApps -> SmartThings Recommends, you will find one called "Smart Locks". You'll want to enable that one... Once it's enabled, you can go into it from the Dashboard screen. That's where you can configure codes, view history of who locked/unlocked the door, etc.4. Alexa initially was only able to tell me the status after enabling the SmartThings skill. I really wanted Alexa to be capable of locking the doors so that I can create Routines like "I'm leaving" that will turn off the lights and lock the door. (Side note: do NOT create skills to UN-lock the door. You don't want someone yelling through your window to unlock the door!) I needed to workaround the issue using a virtual button in SmartThings. Here's a summary.4a. In the SmartThings web interface, go to My Devices. Click on New Device.4b. I made the name "Front Door Lock Button". Device Network ID needs to be something unique. I arbitrarily named mine "LCK001". The "Type" should be entered as a "momentary button tile". The "Location" dropdown should have Home or whatever your hub location is called. And finally you should select your hub under "Hub".4c. In the SmartThings app, under Automation, you can now add a custom routine. I named mine "Lock the Door". Under "What do you want to happen" there is an option for "Lock these doors" where you can select your Schlage lock. Then way down at the bottom is an option "Automatically perform Lock the Door". If you go in there, then you click on "Something turns on or off". Then for "Which" you select "Front Door Lock Button" and "Turns" to "On or Off". At this point you should be able to run this routine and have it lock your door.4d. In the Alexa App you should be able to discover devices and see this new "button" called "Front Door Lock Button". Turning this switch "on" should lock the door. (And because it is a "momentary button" it will turn itself back off after a few seconds.)4e. I created a Routine inside Alexa called "Lock the door" that turns on "Front Door Lock Button". The end result is that I can say "Alexa, Lock the Door" and my front door will lock... Or similarly, within other routines like "I'm leaving" I will similarly set "Front Door Lock Button" to "On".EDIT: June 13, 2018My SmartThings hub died and I had to replace it. It took a long time to figure out how to "unpair" the lock so that it could be added to the new hub. I received some good help from Schlage support (though it would have been better if this had been readily available online!). I tried a factory reset of my lock, but that wasn't good enough! The lock needed to be "excluded" before I could re-pair ("include").To "exclude" my lock:A. Using my brand new SmartThings hub, I went into the SmartThings app to the "More" menu.B. I clicked the "Hub is online" button which brought up some additional info/menus.C. I clicked Zigbee Utilities -> General Device Exclusion -> Remove.D. While the hub was in exclusion mode, I went to my Schlage locked and pressed Schlage + <6-digit-programming-code> + 0. This resulted in a green checkmark to indicate I had succeeded in excluding my previously paired Z-wave.E. I ended exclusion mode on my SmartThings app and went to the screen to add a new device.F. I again pressed Schlage + <6-digit-programming-code> + 0. I got the checkmark again, indicating was in in pairing mode. The lock then showed up on the app and I was able to pair.Furthermore, it looks like Alexa now allows users to lock doors. So it is not necessary to go through all the virtual button business (thank goodness!). It looks like Alexa has a "secure unlock" function where you provide some kind of additional code to lock the door. I'm not planning to use this feature though. I will unlock the door from my SmartThings apps or with a code at the door.EDIT: April 29. 2019I recently changed my batteries for the first time. I was impressed that I got a push notification from the Smart Things app telling me the battery was low. (I may have configured that early on -- it has been so long now I don't remember!) About 18 months of usage with semi-regular usage (at least several times per week). Pretty good in my opinion.