Lock or unlock your door from anywhere, give family a passcode instead of a key and always know who comes and goes with the Nest x Yale Lock with Nest Connect. The Nest × Yale Lock replaces the deadbolt you already have. If someone tries to tamper with it, you’ll get an alert, if the batteries start running low, you’ll know right away, and if your lock loses power, you can quickly charge it with a 9V battery to unlock the door. When the Nest × Yale Lock is connected to the Nest app, you can unlock your door from your phone. Create passcodes for family, guests and people you trust. Even set times when passcodes expire. You can get alerts whenever someone unlocks and locks the door. And when Nest knows you’re away, your door can lock automatically.