The Assure Lock SL is a very minimalist deadbolt: its outward-facing part is a small, simple control panel with a touchpad and nothing else. It is available in four finishes: black, brass, bronze and matte nickel. Yale also offers a few variations of the Assure lock: The Yale Assure Lock Touchscreen is a deadbolt lock with a traditional keyhole under the touchscreen; the Yale Assure Keypad Door Lock swaps out the touchscreen for a keypad; and the Yale Assure Lever is a lever lock that features either a touchscreen or a keypad with a physical key slot. A handy feature called DoorSense uses a small magnet attached to (or embedded in) the door frame to detect when the deadbolt has been pushed into the door and locked. That means Assure can detect when someone has tripped the lock but the door is open. It can’t automatically close the door for you, but this feature provides a useful confirmation that the lock has worked when you trigger it remotely. The lock can store up to 50 key codes on its own, but the August module increases that number to 250, which should be enough for anyone. These can be in the form of keys stored in the app or as just key codes. Either way, they can be set to allow access only at certain times, on certain days, or for a one-time use. You can plug a 9-volt battery into two terminals on the bottom of the keypad to temporarily power the lock – enough to get you inside. Because the Yale Assure SL is connected to August’s system, it can take advantage of all of that app’s smart-home compatibilities, so you can connect it to August’s video doorbells, for example. The Assure Lock SL is also compatible with Alexa, Google Home and Apple HomeKit.
