In the evolving landscape of smart home technology, smart locks stand out as a cornerstone of convenience and security. They offer a blend of traditional deadbolt reliability with modern features like remote access, keyless entry, and integration into broader smart home ecosystems. Among the leading contenders in this space, August Home has consistently delivered innovative solutions. Our focus today is on the latest iteration of their flagship product, the August Wi-Fi Smart Lock (4th Gen), which aims to streamline smart lock ownership by integrating Wi-Fi directly into the device.
August Wi-Fi Smart Lock (4th Gen): In-Depth Analysis
The August Wi-Fi Smart Lock (4th Gen) represents a significant refinement in smart lock design and functionality. Unlike its predecessors, which often required an external Connect Wi-Fi Bridge for remote access, this 4th-generation model boasts integrated Wi-Fi. This means a simpler setup and fewer accessories, making it a more elegant solution for homeowners looking to upgrade their front door.

Design and Installation
Physically, the 4th Gen August Smart Lock is noticeably smaller and sleeker than previous models, boasting a diameter of 72mm and a depth of 50mm. This reduced footprint allows it to blend more seamlessly with various door aesthetics without being overly obtrusive. Its design retains the August signature — it attaches to the inside of your door, leaving your existing deadbolt and exterior hardware untouched. This is a crucial advantage for renters or those who prefer to maintain their existing key. Installation is remarkably straightforward and typically takes less than 15 minutes with just a screwdriver. The app provides clear, step-by-step instructions, guiding you through the process of replacing the interior thumbturn of your existing single-cylinder deadbolt.
Features and Performance
The core functionality of the August Wi-Fi Smart Lock revolves around convenience and control. Key features include:
- Integrated Wi-Fi: The standout feature, allowing remote control and monitoring without an additional bridge. Connects directly to your home’s 2.4GHz Wi-Fi network.
- Auto-Lock/Unlock: Utilizing geofencing, the lock can automatically unlock as you approach your door and lock itself after a set period once you’re inside. This feature is highly convenient but requires reliable GPS on your smartphone.
- DoorSense: August’s proprietary technology detects if your door is open or closed, not just locked or unlocked. This adds a crucial layer of security, notifying you if your door is left ajar.
- Virtual Keys: Grant temporary or permanent access to family, friends, or service providers. You can revoke access at any time and set schedules for specific entries.
- Activity Feed: A comprehensive log tracks every time your door is locked or unlocked, by whom, and at what time, offering peace of mind and accountability.
- Voice Control and Smart Home Integration: Works seamlessly with Amazon Alexa, Google Assistant, and can integrate with Apple HomeKit (via a HomeKit hub like an Apple TV or HomePod Mini). This allows for voice commands to lock/unlock (with a PIN for unlock commands for security) and check status.
In our testing, the lock performed reliably. Auto-unlock was generally accurate, though occasional delays occurred, a common quirk with geofencing. The DoorSense feature worked flawlessly, providing accurate door status. The August app itself is intuitive and well-designed, offering easy management of users, settings, and activity logs. Battery life, powered by two CR123 batteries, typically lasts around 3-6 months depending on usage, with the app providing low battery alerts.
Security Considerations
From a security standpoint, the August Wi-Fi Smart Lock doesn’t replace your deadbolt’s physical security; it enhances its functionality. It operates on AES 128-bit encryption for communication, and the app supports two-factor authentication for an added layer of digital security. It’s important to remember that the physical strength of your deadbolt remains the primary barrier against forced entry, so pairing the August lock with a robust, high-quality deadbolt is recommended.
From a security standpoint, the August Wi-Fi Smart Lock doesn’t replace your deadbolt’s physical security; it enhances its functionality.
| Feature | Specification / Detail |
|---|---|
| Connectivity | Built-in Wi-Fi (2.4GHz), Bluetooth 5.0 |
| Power Source | 2x CR123 batteries |
| Compatibility | Standard single-cylinder deadbolts (most common types) |
| Dimensions | 72mm diameter x 50mm depth |
| Key Features | Auto-Lock/Unlock, DoorSense, Virtual Keys, Activity Feed, Voice Control |
| Smart Home Ecosystems | Amazon Alexa, Google Assistant, Apple HomeKit (via hub) |
| Exterior Appearance | Retains existing deadbolt exterior |
Pros
- Integrated Wi-Fi eliminates need for external bridge.
- Retains existing deadbolt and exterior hardware, preserving curb appeal.
- Easy DIY installation, ideal for renters or homeowners.
- DoorSense provides crucial open/closed door status.
- Excellent auto-lock/unlock functionality (geofencing).
- Robust app with comprehensive features like virtual keys and activity logs.
- Sleeker and smaller design than previous generations.
Cons
- Battery life, while decent, still requires periodic replacement.
- Auto-unlock can occasionally be delayed or inconsistent due to geofencing reliance.
- Requires a HomeKit hub (Apple TV, HomePod) for full Apple HomeKit integration.
- Relies on the strength of your existing deadbolt.
Buyer’s Guide: Choosing a Smart Lock
Selecting the right smart lock involves more than just picking a popular brand. It requires understanding your specific needs and how a smart lock integrates with your home. Here’s what to consider:
- Connectivity: Smart locks use various protocols. Wi-Fi (like the August Wi-Fi Smart Lock) offers direct remote access but consumes more battery. Bluetooth is good for proximity control. Z-Wave or Zigbee locks require a smart home hub but offer better battery life and broader ecosystem integration.
- Installation Type: Do you want a full replacement lock (e.g., Kwikset, Schlage smart locks) or an add-on that works with your existing deadbolt (like August)? Add-ons are easier to install and preserve your exterior look.
- Power Source & Battery Life: Most smart locks are battery-powered. Check the battery type, expected lifespan, and low-battery notification features. Some come with optional hardwired keypads.
- Key Features:
- Auto-Lock/Unlock: Great for convenience, but check reliability.
- Virtual Keys: Essential for granting temporary access to guests or service providers.
- Activity Log: Tracks who enters and exits and when.
- DoorSense (or similar): Detects if the door is open or closed, not just locked.
- Voice Control: Compatibility with Alexa, Google Assistant, or HomeKit.
- Keypad: Do you need a physical keypad for code entry, or is app/key access sufficient?
- Smart Home Ecosystem Compatibility: Ensure the lock works with your existing smart home platform (e.g., Google Home, Amazon Alexa, Apple HomeKit) for seamless integration and automation.
- Security: Beyond smart features, consider the physical security rating of the deadbolt it integrates with or replaces (e.g., ANSI Grade 1). Also, look for strong encryption and two-factor authentication for digital security.
- Design & Aesthetics: Smart locks come in various finishes and styles. Choose one that complements your door and home’s exterior/interior.
A smart lock is a crucial component of a comprehensive smart home security system. For a deeper dive into how smart locks fit into the broader picture of safeguarding your home with technology, check out our Ultimate Smart Home Security Guide, which covers everything from cameras to alarm systems.
Conclusion
The August Wi-Fi Smart Lock (4th Gen) is an outstanding choice for anyone seeking a convenient, reliable, and user-friendly smart lock. Its integrated Wi-Fi is a game-changer, simplifying setup and usage by eliminating the need for a separate bridge. It excels in its core functionality, offering robust remote access, effective auto-lock/unlock, and the invaluable DoorSense feature. While battery life is par for the course for smart locks and geofencing can sometimes be finicky, these are minor trade-offs for the immense convenience and peace of mind it offers.
This lock is particularly well-suited for renters or homeowners who wish to retain their existing deadbolt and key, as well as those who prioritize a clean, hub-free smart home setup. For its blend of elegant design, intuitive app experience, and strong feature set, the August Wi-Fi Smart Lock (4th Gen) earns our strong recommendation as a top-tier smart lock.



