August Smart Lock (3rd gen+ wifi bridge)

August Smart Lock (3rd gen + WiFi bridge). It also works on condo doors because it does not replace your existing deadbolt and installs on the inside of the door, which keeps it within condo rules. It includes the WiFi Connect so you can control the lock from anywhere. This generation uses triple A batteries that usually last more than six months, and tends to be more reliable than the newer model that needs more frequent charging.