After trying August's newest smart lock (3rd gen smart lock pro), we took a step back and tried an older model (smart lock). The newest model looked like a cereal bowl glued to the door. The older version looks more like what you'd expect for a lock. Both were easy to install and set up. Both have IFTTT integration that allows us to disarm our iSmartAlarm security system when the lock is unlocked using the app, key, or optional keypad accessory. The ability to lock and unlock automatically through IFTTT as well as add and remove users instantly through the app makes this a great choice for home security. We used it to give our house/pet sitter access to our home while we were on vacation, with the ability to instantly disable the sitter's code if something went wrong. We highly recommend it!