$129.99
Save $40.00
was $169.99
Buy Now, Pay Later
As low as
$21.67
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Only 1 left in stock, order soon!
Arrives
Nov 17 – Nov 22
At a glance
- Condition
- Used - Very Good
- Style
- Lock + Connect
- Color
- Silver
- Model
- AUG-SL04-C03-S04
- Dimensions
- 3.4 x 3.4 x 2.2 in
- Weight
- 1.8 lb
- Material
- Metal
- In the box
- WiFi Bridge
Features 5
- Total control. Lock and unlock your door, grant keyless access and keep track of who comes and goes, all from your August App.
- Upgrade your existing lock. Simply attaches to your existing deadbolt, on the inside of your door. Your existing keys will still work.
- Control guest access. Send guest secure keys to friends, family or people you trust instantly, all from the August app.
- Auto-Unlock. Auto-Unlock knows when you arrive and unlocks the door as you approach. Never fumble for keys again.
- Use your voice. Tell Alexa, or Hey Google to lock, unlock or check the status of your front door.
Description
Control your door from anywhere with August Smart Lock. Attaches to your existing deadbolt so your keys still work. Works with Alexa and Hey Google.
Specs 26
| Brand | August Home |
|---|---|
| Special Feature | Smart Lock |
| Lock Type | Deadbolt |
| Item dimensions L x W x H | 3.4 x 3.4 x 2.2 inches |
| Material | Metal |
| Brand Name | August Home |
| Recommended Uses For Product | Door |
| Number of Pieces | 1 |
| Model Number | AUG-SL04-C03-S04 |
| UPC | 850004426524 |
| Model Name | August Smart Lock + Connect |
| Manufacturer | August Home |
| Unit Count | 1.0 Count |
| Manufacturer Part Number | AUG-SL04-C03-S04 |
| Item Type Name | Smart Lock |
| Additional Features | Smart Lock |
| Control Method | App |
| Connectivity Protocol | Bluetooth, Wi-Fi |
| Smart Home Compatibility | Smart Home Compatible |
| Style Name | Wi-Fi Lock |
| Color | Silver |
| Shape | Oval |
| Material Type | Metal |
| Finish Types | Painted |
| Item Dimensions | 3.4 x 3.4 x 2.2 inches |
| Item Weight | 1.8 Pounds |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 17 – Nov 22
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Works Great
Color: Silver
Great smart lock and installs easily. Connection and setup was easy, and fast. Having the hub is a no brainer as you can control the lock from anywhere you have an internet connection, and you can tell if the door is open or shut, locked or unlocked. Great way to permit emergency access when you are not around.
...
show more
Reviewed in the United States on April 15, 2024 by Bert808
Love it! Works great.
Color: Silver
I asked a product expert which August lock I should buy and although he tried to steer me to the one that had WiFi enabled, the worst he had to say about this one was that it was noisier and needed a separate connect unit. I don't mind the noise at all and the extra Connect unit is not a problem (I just had to create a separate 2.5Ghz band on my internet for it to work). I love that this uses normal batteries. As a photographer, I have tons of rechargeable batteries so I prefer using these (once the included batteries die) rather than a battery that has to be thrown away. I had bought the Level bolt before and couldn't get it to work on my old rental front door so I'm incredibly satisfied with how easy this retrofit installation was! Much easier, and less fuss.
...
show more
Reviewed in the United States on March 29, 2024 by C. Lynn
Love August locks Love August locks
Color: Silver
Originally bought a lock that didn’t come with the little WiFi plug in because we have several already and didn’t realize you couldn’t attach more than one lock to the WiFi device. So I returned that one and ordered this one. We have a back door that has a glass window with trim around it so we needed a super slim lock to go there. By the measurements on the description it should have fit with about 1/4-1/2” to spare… which it does AFTER it’s installed. Unfortunately I forgot that all of our other August locks attach to the mounting bracket with little wing clips that flare out from the sides about an inch. With them flared out you then align the lock over the mounting bracket and then close the wings back in to lock it in place. My measurement did NOT account for the little wings. We needed an automated lock for the door regardless and this was the slimmest one I could fine so I resolved to try and turn the mounting bracket as far sideways as possible to give more room for the wing clips. The clip still grazed the top of the trim but I was able to force it in place with only a small dent made on the trim when I was trying to force it. If it hadn’t worked I had decided I would just notch the trim. But I didn’t end up needing to do that. Once the wing clip was locked in I slightly rotated the whole lock to the upright position and everything works great. The device is only slightly lose because of how I had to have the mounting bracket loose enough to slide sideways. But it doesn’t wiggle on its own or anything. I’m super excited that i let worked out and I didn’t cause a crazy amount of damage to the trim or have to notch it completely. The reason I only gave 4 stars is I wish I had known/remembered about the wings. I wish they were shorter so I could have locked in place without any issues.
...
show more
Reviewed in the United States on December 2, 2025 Reviewed in the United States on December 2, 2025 by Kindle Customer
Still a solid piece of kit
Color: Silver
I've been using these basic August locks for many years now. They're reasonably priced and perfect for public locations (a church, in my case) because the lock knob is just as intuitive as a standard deadbolt, unlike the round August locks. The August app makes it easy to grant access to whoever needs it or remote lock/unlock on demand. No more need for crazy physical key control, lock boxes, periodic lock changeouts, etc. The August plugin for homebridge pulls these locks into HomeKit, so I can lock or unlock the facility on an automated schedule.
...
show more
Reviewed in the United States on February 10, 2026 by J. Gardner
Great for my apartment
Color: Silver
Easy install in my apartment, does not affect original key (keeping the landlord happy). Been using daily for a year. With notifications I can see when the landlord or maintenance goes in and out of my apartment real time.
Reviewed in the United States on January 13, 2026 by Michael Drake
doesn't work with international guests SMS
Color: Silver
One of the worst smart locks ever, as an airbnb operator this lock app DOES NOT WORK WITH INTERNATIONAL GUESTS!. they simply cant receive a text and register on the app to be able to login. very bad expirience, also delaid SMS for 2nd auth, almost 3 hours later with 10 min expiration time. one of the worst smart locks ever,
...
show more
Reviewed in the United States on March 23, 2026 by Nadav Dvir
Best smart lock purchase!!
Color: Silver
This smart lock is AWESOME! Since installing I’ve never had to use my keys to lock or unlock my apartment door. Installation was super easy! Like seriously dumb proof! One thing to underline here is that the bridge does need to be placed like right next to the smart lock. What I did was just use a long extension cord and place the bridge right beside the door. Otherwise this product is dope! I have the settings to automatically lock the door after two minutes while I’m home. Then when I leave, the lock automatically locks when I drive away. Also for all you renters out there, this is 100% rental friendly!
...
show more
Reviewed in the United States on December 9, 2023 by Sofia I
I love this lock!!
Color: Silver
The only issue I had is one that I expected to have when investigating. My door has a window in the door and the wings that open to latch the lock onto the door were too wide on one side. I ended up cutting it off with pruning shears, which was not easy because it’s solid metal. But it’s very study even with only 1 and ha half wings holding it on. Works like a charm. I’ve had it for almost two months now with no issues and no battery changes yet. Highly recommend if you have the lateral clearance in your lock area.
...
show more
Reviewed in the United States on September 1, 2024 by Heath K