Product image from current catalog dataProduct overview
August Wi-Fi Smart Lock (4th Gen): What to Know
Per August's own product page, this Wi-Fi Smart Lock is designed to fit over most existing single-cylinder deadbolts from inside the door, keeping your existing exterior keyhole and hardware unchanged — a different approach from a full deadbolt replacement like the Schlage or Yale locks in this guide. August's listed dimensions are compact (72mm diameter by 46mm depth), and the company states it includes DoorSense, a separate sensor that reports whether the door is physically closed and locked, rather than only confirming the internal motor turned.
August's page lists this as running on two included CR123 batteries with an estimated 3 months of battery life, and supporting smartphone app control, Apple Watch, physical keys (since your original exterior keyway stays in place) and an optional add-on keypad. Voice control is listed as compatible with Alexa, Google Assistant and Siri/HomeKit.
August's official listed price at the time of our check was $199.99, positioning it in the middle of this comparison's price range — less than the Schlage Encode Plus, but above the eufy C30. The company backs it with a 1-year warranty per its own product page.
Key Listed Features
Installs over an existing deadbolt from inside the door — keeps original exterior keyway
DoorSense sensor confirms the door is physically closed, not just that the lock turned
Built-in Wi-Fi with no separate bridge required for this generation
Compatible with Alexa, Google Assistant and Siri/HomeKit voice control
