August WiFi Smart Lock: Full Setup and Buying Guide

The August WiFi smart lock is one of the few smart deadbolts that installs over your existing lock, so you keep your keys and your exterior hardware while gaining app control, auto-unlock, and remote access. It is a popular choice for renters and homeowners who want smart features without replacing the whole lock. This guide covers how it works, how to install it, and whether it is right for you.

What Makes the August Lock Different

Most smart locks replace both the interior and exterior parts of your deadbolt. The August lock replaces only the interior thumb-turn. It clamps onto your existing deadbolt’s tailpiece, so from the outside your door looks unchanged and your physical keys still work. This retrofit design is why renters love it: nothing about the door’s exterior or the landlord’s key system changes.

Built-In WiFi vs. Older Bridge Models

Earlier August locks needed a separate Connect WiFi Bridge to reach the internet. The current August WiFi smart lock has WiFi built directly into the lock body, so it connects to your home network on its own for remote locking, unlocking, and status checks. It is also noticeably slimmer than older generations, sitting about 45 percent smaller on the door. If you are shopping used, confirm whether the model has WiFi onboard or requires the add-on Bridge.

Key Features

• Auto-Lock and Auto-Unlock: The lock can relock after a set time and unlock automatically as you approach using your phone’s location and Bluetooth.
• Remote access: Lock or unlock from anywhere through built-in WiFi.
• DoorSense: A sensor tells you whether the door is actually closed, not just locked.
• Activity feed: See who locked or unlocked and when.
• Guest access: Grant temporary or recurring digital keys to family, guests, or cleaners.

Smart Home Compatibility

The August WiFi smart lock works with Amazon Alexa, Google Assistant, and Apple Home, letting you check status and lock by voice. Apple Home users get support for home automations and, on some models, home key features. Because it speaks common protocols, it slots into most existing smart home setups. Voice unlocking usually requires a spoken PIN for security, which is a sensible safeguard.

What You Need Before Buying

The August lock only works with certain deadbolt types. Before purchasing, confirm you have a standard single-cylinder deadbolt with a thumb-turn on the inside. It is not compatible with mortise locks, deadbolts that need a key on both sides, or unusual proprietary hardware. August publishes a compatibility checker; run your lock through it first. You will also need a 2.4 GHz WiFi network, since the lock does not connect to 5 GHz bands.

Step-by-Step Installation

1. Remove the interior thumb-turn of your existing deadbolt using a screwdriver. Leave the exterior side alone.
2. Attach the August mounting plate to the deadbolt with the provided screws.
3. Select the correct adapter for your deadbolt’s tailpiece and snap it in.
4. Slide the August lock body onto the mounting plate and lock it in place with the set screw.
5. Insert the batteries and open the August app to begin pairing.
6. Follow the app to calibrate the lock so it learns the locked and unlocked positions.
7. Connect it to your WiFi and enable DoorSense by placing the included door sensor.

Most people finish in 10 to 15 minutes with just a screwdriver. No wiring or drilling is required.

Battery Life and Power

The August WiFi lock runs on standard CR123 or AA batteries depending on the model, and typically lasts three to six months per set. Battery drain increases if you use auto-unlock heavily, since that keeps Bluetooth actively scanning. The app warns you when the charge runs low, and swapping batteries takes seconds without removing the lock. Keep a spare set on hand so you are never locked out by a dead battery, though your physical key always remains a backup.

Security Considerations

Because the exterior keyway is unchanged, the lock is only as pick-resistant as your existing deadbolt, so a quality Grade 1 or Grade 2 deadbolt is a good foundation. The August app uses encryption, and guest keys can be time-limited and revoked instantly. Enable two-factor authentication on your August account. DoorSense adds real security value by telling you if the door was left ajar, a common oversight that a plain lock cannot detect.

Guest and Family Access

One of the strongest reasons to choose an August WiFi smart lock is flexible access sharing. You can:

• Send a permanent digital key to household members.
• Create temporary keys for houseguests that expire automatically.
• Grant recurring access windows to a dog walker or housekeeper, for example weekdays from 9 a.m. to noon.
• Revoke any key instantly if plans change or a phone is lost.

Every entry appears in the activity log, so you always know who came and went.

Costs and Accessories

Expect to pay roughly $130 to $230 for the current August WiFi lock, depending on generation and bundle. There are no subscription fees for core features. A useful add-on is the August Smart Keypad, which lets guests enter a code at the door without a phone, priced around $40 to $60. Replacement batteries cost a few dollars every few months. Overall, it is a mid-priced smart lock with premium retrofit convenience.

Common Problems and Fixes

If the lock struggles to turn, recalibrate it in the app and check that your deadbolt moves smoothly by hand; a sticky bolt strains the motor. WiFi dropouts usually trace to weak 2.4 GHz signal at the door, solved by moving the router or adding a mesh node. If auto-unlock is unreliable, make sure location services and Bluetooth stay enabled and that you fully leave the geofence before returning. A lock that reads the door as open when it is closed just needs the DoorSense sensor realigned.

Who Should Buy It

The August WiFi lock is ideal for renters who cannot alter exterior hardware, households that share access with guests or service providers, and anyone who wants to keep their existing keys while gaining smart control. If you want a keypad built into the exterior or a fully keyless door, a full-replacement smart lock may suit you better, though you can add the August keypad accessory to close that gap.

Auto-Unlock Explained

Auto-unlock is one of the August lock’s headline conveniences, and it is worth understanding how it works. The feature uses your phone’s location services to detect when you have left home, establishing a geofence around the house. As you return and cross back inside that geofence, then come within Bluetooth range of the door, the lock automatically disengages so you can walk straight in with your hands full. For it to work reliably, you must keep Bluetooth and location permissions enabled and fully leave the geofence before returning; a quick trip to the mailbox may not trigger it. Many users love the feature, while others prefer to disable it for tighter control and simply unlock from the app.

Using the August App Day to Day

The August app is the command center for the lock. From it you lock and unlock remotely, view the real-time status, and scroll the activity feed showing every entry with names and timestamps. You can set auto-lock timing so the door secures itself a set number of seconds or minutes after being opened, which eliminates the worry of leaving the door unlocked. The app also manages all your guest keys, sends notifications when specific people arrive, and displays battery health so you are never caught off guard by a dead battery.

Adding the Smart Keypad

While the August lock is phone-centric, the optional August Smart Keypad closes the gap for guests without the app or for family members who prefer a code. Mounted outside near the door, the wireless keypad lets you assign unique entry codes, including temporary and scheduled codes for cleaners or dog walkers. Because the keypad is battery-powered and pairs wirelessly, installation requires no wiring, just a couple of screws or adhesive. It is a worthwhile addition for households that want keyless entry options beyond the smartphone.

Final Verdict

The August WiFi smart lock stands out for its retrofit design, quick tool-light installation, built-in WiFi, and thoughtful features like DoorSense and revocable guest keys. It is one of the most renter-friendly smart locks available and pairs cleanly with Alexa, Google, and Apple Home. Confirm your deadbolt is compatible, keep spare batteries handy, and you will have a convenient, keep-your-keys upgrade that makes everyday entry and access sharing dramatically easier.