They are called Ring doorbells that connect to your internet by Bluetooth and have a camera where you can see who is at the door and talk to them, when you are not home it rings on your phone and you can talk that way too. It also alerts you to any movement in front of it and you can see what or who it is, they do not need to push the button, but they have to do it to talk.

Yes 3 years for a simple probate where everyone agreed on things, my sister hired shitty lawyers.