YOU'VE GOT ENOUGH ON YOUR PLATE, let Yale get the door with the Yale Assure Lock 2. With multiple ways to unlock, the ability to easily share and track entry codes and advanced Auto-Lock with DoorSense(R), this Wi-Fi smart lock gives you one less thing to worry about. With built-in Wi-Fi, you can easily check that the door is locked, see if the dog walker came on time and receive a notification when the kids get home from school when you’re away from home, using the Yale Access App. Note: This product only works on 2.4 GHz Wi-Fi and in the U.S. and Canada.