This is the first smart device I've ever bought and I love it . It was so easy to install with the best step by step directions I've ever used. And it works great I can set it to automatically lock after I open it or I can remotely lock or unlock it from multiple cell phones or Google home  or Alexa. You can also set a 4-6 digit code into it for the keypad and have up to 250 different codes for different people and it generates a log of who came and went and at what time. You can also have it send a notification to your phone to notify you if someone locks or unlocks it and you can always see the current status. It is very well made and comes with the old fashion key if anything fails. I will enclose some pictures so you can see how good it looks.