Update: Sold out

August’s 2nd genration Smart Lock lets you lock and unlock your door from anywhere using your phone, it’s even compatible with Siri, and you can get the silver model for just $100 today, an all-time low.

Assuming you have your phone with you whenever you leave the house, an August Smart Lock-installed door will auto lock behind you and unlock as you approach. It’s especially useful because you don’t have to necessarily be home to grant or restrict access to people like dog walkers, maintenance workers, or other people who need to come into your house. It even creates a log of when the door has been opened so you monitor comings and goings.

We saw a very short-lived $100 deal on the silver model a couple of weeks ago, but otherwise, this is as good a price as we’ve seen.