With its fourth-generation model, August has one of the best smart locks on the market. It’s easy to install, works with most digital assistants and lets you keep using your existing mechanical locks. At $249 it is more expensive than some other smart locks, but starting today you can save $20 by using the code ENGADGETLOCK at checkout. That brings it down to $229, which is the cheapest price we’ve seen to date.

Buy August Smart Lock WiFi (4th-gen) on Wellbots for $229