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August Home, Wi-Fi Smart Lock (4th Generation) – Fits Your Existing Deadbolt in Minutes, Matte Black

4.1 4.1 out of 5 stars 10,416 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Deadbolts by August Home

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Matte Black
WiFi Smart Lock

Purchase options and add-ons

Brand August Home
Special Feature Wi-Fi, No Hub Needed, Biometric Verification
Lock Type Biometric, Deadbolt, Smart Lock
Item Dimensions LxWxH 2.8 x 2.8 x 2.75 inches
Material Metal

About this item

  • UPGRADE YOUR EXISTING DEADBOLT: August smart locks fit on the inside of your door, making your regular deadbolt smarter, more secure and way more convenient. Keep your keys just in case (but you won’t need them).Connectivity Protocol:wi-fi.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.Control Method:Voice
  • GRANT ACCESS WITH THE AUGUST APP: Forget key copying. Quickly and easily share permanent, scheduled or temporary access to your home with friends, family and other people you trust, and never put a key under the doormat again.
  • EASY TO INSTALL ON ANY DOOR: Even if you’re not so handy, installation only takes about 10 minutes. August locks fit perfectly over most single cylinder deadbolts and aren't much bigger than your original thumbturn.
  • AUTO-LOCKS AND UNLOCKS: August Wi-Fi Smart Lock is able to Auto-Unlock as you get home for totally hands-free unlocking (optional). With Auto-Lock and DoorSense, your home automatically secures once your door is closed, or after a set amount of time.
  • WORKS SEAMLESSLY WITH YOUR SMART HOME: Built-in Wi-Fi allows your lock to work with your favorite voice assistant, including Amazon Alexa, Google Assistant, Apple HomeKit, Samsung SmartThings and more.
  • AWARD-WINNING SMART LOCK YEAR AFTER YEAR: Voted CNET Editor's Choice two years in a row (2020/2021), Best Smart Lock by Good Housekeeping (2021), Best Smart Lock by Tom's Guide (2021).
  • KEEP YOUR HOME'S CURB APPEAL: Get smart lock functionality without changing the look of the outside of your front door. August smart locks are installed only on the inside of the door, so your design for your front door doesn’t have to adapt.
This item is certified to work with Alexa
WORKS WITH ALEXA
Add voice control by combining with an Alexa device
  • This item
  • +
  • Required
  • =
  • “Alexa, lock the door.”

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Customer ratings by feature

Easy to install
4.1 4.1
Easy to use
3.6 3.6
WiFi signal
3.6 3.6
Lock Feature
3.5 3.5

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$135.20
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August Home, Wi-Fi Smart Lock (4th Generation) – Fits Your Existing Deadbolt in Minutes, Matte Black
August Home , Wi-Fi Smart Lock (4th Generation) – Fits Your Existing Deadbolt in Minutes, Matte Black
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Price-41% $135.20
List:$229.99
-13% $226.19
List:$259.99
$79.98-31% $137.90
List:$199.99
-38% $79.99
List:$129.99
-10% $255.37
Typical:$283.80
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Easy to install
4.1
3.6
4.6
4.3
4.6
4.2
Lock Feature
3.5
3.5
4.3
4.2
4.3
4.2
Alexa integration
3.5
1.8
3.2
3.8
3.8
4.0
Value for money
3.1
4.3
4.5
3.5
Easy to use
3.6
4.6
4.2
Sold By
Amazon.com
Amazon.com
Amazon.com
✅ Blazing Prices
NexKey
Amazon.com
lock type
Smart Lock, Deadbolt, Biometric
Keypad, Deadbolt
Keypad
Key Lock
Biometric, Combination Lock, Keypad
Deadbolt
number of items
1
1
1
1
1
1
material
Metal
Zinc
Metal
Zinc
Bronze
shape
Round
Rectangular
Rectangular
Oval
Rectangular
Rectangular
finish type
Brushed
Powder Coated
Brushed
Bronze
weight
0.4 pounds
454 grams
1.8 pounds

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From the manufacturer

Guest Keys

Grant access to friends, family, or services

Guest access can be limited to a few minutes, hours, or days - recurring or a single occurrence.

Auto-Lock and Unlock

With Auto-Lock and Unlock you’ll never have fumble around for your keys or worry if remembered to lock the door.

Product guides and documents

Looking for specific info?

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF ]

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August Home, Wi-Fi Smart Lock (4th Generation) – Fits Your Existing Deadbolt in Minutes, Matte Black


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Product Description

The August Wi-Fi Smart Lock (4th Generation) and August app allows you to remotely lock or unlock your door, check door status, grant virtual guest keys and always know who’s coming and going. Connected out of the box with built in Wi-Fi, the August Wi-Fi Smart Lock is easy to install and attaches to your existing deadbolt so you can keep your original keys.

Customer reviews

4.1 out of 5 stars
4.1 out of 5
10,416 global ratings

Customers say

Customers like the ease of installation with the lock. They mention that the instructions are adequate and the lock is easy to install. They appreciate the sleek matte black finish and the fact that it adds a touch of elegance to their door. However, some customers have reported issues with connectivity, app, and value. Opinions are mixed on quality and performance.

AI-generated from the text of customer reviews

749 customers mention623 positive126 negative

Customers find the installation of the lock to be super easy, swift, and simple. They also appreciate the adequate instructions and the video provided by the manufacturer. Overall, customers find the lock easy to install and use, providing peace of mind and convenience.

"...The rest of the install was so easy. Oh well.Also, go get the rechargeable 123a batteries for this lock...." Read more

"...1. Install was easy. Probably no more than 15 minutes. The unit was installed on a condo door in an interior hallway...." Read more

"...The wireless keypad was also incredibly easy to set up. I mounted it, then the app walked me through the simple setup...." Read more

"...It installed quickly. I picked the coupling that I thought fit best and went through the short Wi-Fi set-up procedure...." Read more

152 customers mention115 positive37 negative

Customers like the appearance of the lock. For example, they say it has a great physical design, the sleek matte black finish adds a touch of elegance to their door, and it's less visually obtrusive. Some mention that the graphics that indicate door status are smart. Overall, most are satisfied with the appearance and functionality of the product.

"...It's very nice, but I knew it would be better with a smart lock...." Read more

"...The software app looks slick, but it doesn't work. To unlock and lock the door, the software/app on the phone only works about 10% of the time...." Read more

"...It looks nice and blends well with existing door hardware and works smoothly. I highly recommend this Smart Lock. 5 stars all the way." Read more

"...The keypad seems really flimsy and looks super cheap, and while it came with screws, it wasn't obvious where I was supposed to use them..." Read more

1,010 customers mention471 positive539 negative

Customers are mixed about the quality of the lock. Some mention that it works very well, and is easy to lock and unlock, while others say that it does not lock automatically after the door is closed. The auto-unlock function is very spotty, and the lock feature on their iPhone doesn't work well.

"...The auto-unlock feature slaps. When I get home from work and approach my front steps the door just unlocks for me...." Read more

"...It is possible to lock yourself out without your phone and have no entry if you haven't brought keys with you...." Read more

"...It lets me lock or unlock with my phone, and has a log of activity.The wireless keypad was also incredibly easy to set up...." Read more

"...Even worse is the wireless keypad. When it's connected it works about 30% of the time...." Read more

793 customers mention391 positive402 negative

Customers are mixed about the performance of the lock. Some mention that it works really good, and it looks good. They say it works well with their HomeKit set up, and the app is basic but does what's needed. However, others say that the HomeKIT really does not function well with these locks, the keypad to lock the door works seldomly, and is very unreliable. They also mention that the locks do not work in "offline" mode.

"...the light brown and recalibrated the lock one more time it started working perfectly...." Read more

"...It doesn't activate for me after I return from a short dog walk.6. Auto lock - I do not use this now but may activate (see below)...." Read more

"...I LOVE this smartlock. It works exactly as expected and I have no concerns...." Read more

"...When I leave and try to use the keypad to lock the door it works seldomly. Maybe after 6 or 7 tries will it actually engage the lock on the door...." Read more

593 customers mention161 positive432 negative

Customers have issues with connectivity with the lock. They mention that the unit often loses WiFi connection, and the app doesn't stay connected to Apple Home. Some customers also mention that it tries to work without a hub and suffers from poor communication. Overall, some customers are disappointed with the connectivity of the lock and recommend it for others.

"...connecting and auto locking or unlocking one time and then not re-syncing the status in the app for almost a year...." Read more

"...Looking back, the first indication of battery failure was WIFi disconnect alerts which were previously rare...." Read more

"...It also has wifi built into it already which is nice if you want to be able to lock/unlock your door remotely...." Read more

"...The lock comes only in silvery grey -- I wish there were a brass option to match my other existing door hardware...." Read more

535 customers mention43 positive492 negative

Customers are dissatisfied with the battery life of the lock. They mention that the batteries run out after about 5 days to 2 weeks, and they are at a critical state. The disposable batteries drain pretty fast, and are expensive. The lock never alerts customers when the batteries are low, and the wifi can drain the batteries faster.

"...The disposable batteries drain pretty fast and are expensive." Read more

"...However as others have mentioned, the wifi can drain the batteries faster...." Read more

"...the keypad, and the reason it should not be used, is that the batteries run out after about 5 days to 2 weeks, without even being used more than a..." Read more

"...From other reviews i understand that the batteries are a weak point as well...." Read more

255 customers mention30 positive225 negative

Customers are dissatisfied with the app for the lock. They say it's clunky, hard to use, and lacks intuitive capability. Additionally, some customers mention that the app requires one unnecessary step to select the lock they want to use.

"...this point I've given up and just use an standard key now as the app doesn't work and neither does the wireless keypad...." Read more

"...The apps are usually horrible and glitch when setting up the locks...." Read more

"...comment is, in order for the Auto Unlock to work, the August app needs to be open and running, I’m not a fan of leaving apps I’m not using running..." Read more

"...Overall the app is really not great; aside from locking and unlocking it's hard to find settings and functions and I found myself googling a lot..." Read more

214 customers mention27 positive187 negative

Customers are not happy with the value of the lock. They say it's not worth the money, and the CR123 batteries required are not cheap. They also mention that the lock is a waste of money and causes headaches.

"...The batteries aren't cheap little AAs either...." Read more

"...The packaging, app and website look slick but are really lacking in substance...." Read more

"...the battery life, since the oddball batteries used in this lock are not cheap...." Read more

"...As it stands now, this lock is pretty much useless to me. I don't need to check the status in the app while I'm home because I'm home...." Read more

Key free lifestyle
5 Stars
Key free lifestyle
I bought a townhouse last August. The doorknob and deadbolt were freakishly close together, so a traditional smartlock would not fit. I would have had to drill a new hole and have a whole new lock mechanism installed in order to get a smartlock. I've been using regular keys like a plebe for months. I hate everything about the inconvenience of using keys and was living in constant fear of accidentally locking myself out of the house.I finally saw the August smartlock as an ad and a lightbulb went off. It looked like it would actually fit! I purchased the one with the keypad to mount outside and installed it two days ago. I LOVE this smartlock. It works exactly as expected and I have no concerns. No more digging through my purse for my keys while I'm carrying groceries and coffee and holding a dog leash etc etc! No more constant fear of locking myself out! And I can share access to a friend/pet sitter/etc!The auto-unlock feature slaps. When I get home from work and approach my front steps the door just unlocks for me. The only thing I've found that could be slightly better is that when I'm walking my dog around the neighborhood, it won't consider me in "away" mode because I didn't go that far. It won't auto-unlock unless you go into away mode first. With that said it's not a big deal because I have the keypad I can use so I can still enjoy key-free walks.It also has wifi built into it already which is nice if you want to be able to lock/unlock your door remotely. However as others have mentioned, the wifi can drain the batteries faster. This model (4th gen) allows you to disable wifi altogether or link it with a bluetooth/wifi bridge instead if you'd prefer to extend battery life. I personally just turned the wifi off. Since I have the keypad if I ever needed an unplanned guest to enter, I'll just give them a code.I will say as far as installation, I wouldn't say it was hard but it took me like 30 minutes, not 10. Mostly because I didn't realize the pointy bit on the big round part had to be pointing more towards the hinge side of the door when you first put it on. Like if I'm facing my door and the hinges are on the left, the pointy bit has to be pointing at about 10:00 when placed. I was pointing it the other direction and it wouldn't lock that way. I had to watch a few youtube tutorials to figure out what I was doing wrong.I am grateful for this product. I think it's the only thing on the market that would have fit my door and it works completely as expected if not better. It seems like such a small thing but it's really life-changing and I've honestly been in a good mood all week because I no longer have to deal with the hassle of keys.
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Top reviews from the United States

Reviewed in the United States on August 1, 2023
Color: Matte BlackStyle: WiFi Smart LockVerified Purchase
Customer image
5.0 out of 5 stars Use whichever adaptor that puts the notches at 12/3/6/9 o’clock
Reviewed in the United States on August 1, 2023
If you had asked me yesterday I would have given this lock 2 stars. Been living with it sorta connecting and auto locking or unlocking one time and then not re-syncing the status in the app for almost a year. Tried perfecting the latch so it was smooth and didn’t catch AT ALL for a good while and that wasn’t the issue. We tried getting a better WiFi signal, disabling all the battery draining features/notifications, calibrating the lock, restarting the app etc. Sometimes it would work a couple times and then resume not syncing on the app. The WiFi connection was strong, the log would note the times we unlocked it manually. Still, I was hung up on the lock to app signal being the cause of our issues and got a august connect adaptor to try and help (plus I read that could help slow the battery drain). Turns out even the 4th gen lock doesn’t allow an external connect device so that was a dead end. Maybe the connect I got is an older model or something but I couldn’t get them to link, it just complained there were no compatible devices at setup). Another clue that this wasn’t the cause should have been that even when using the phone’s Bluetooth signal it wouldn’t update the lock status after the first app unlock. Also when we would unlock from the app the light would start turning green on the lock then end with a red once it unlocked.

Finally found a FAQ doc that said to make sure the notches on the lock adapter were at the vertical position (12/3/6/9 o’clock) when the lock was at it’s ‘default’ position (unlocked). When I swapped out the adaptor to the blue one from the light brown and recalibrated the lock one more time it started working perfectly. No more weird mismatch between the app and lock position even when the WiFi signal was good! Range of motion is much farther when the lock opens now and it has a fancy chirp to show it unlocked correctly. That chirp made me so happy after fighting with the app this long, but it didn’t compare to clicking the app a second time and having it reliably relock immediately.

It felt like it was ‘almost’ working before figuring this issue out so I assumed the app/some buggy firmware was at fault but it was installation error on my part! The rest of the install was so easy. Oh well.

Also, go get the rechargeable 123a batteries for this lock. Saw that tip from someone else and just got two sets to swap between. The disposable batteries drain pretty fast and are expensive.
Images in this review
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Customer imageCustomer imageCustomer image
41 people found this helpful
Report
Reviewed in the United States on January 10, 2024
Color: Matte BlackStyle: Lock + KeypadVerified Purchase
Customer image
Liz
5.0 out of 5 stars Key free lifestyle
Reviewed in the United States on January 10, 2024
I bought a townhouse last August. The doorknob and deadbolt were freakishly close together, so a traditional smartlock would not fit. I would have had to drill a new hole and have a whole new lock mechanism installed in order to get a smartlock. I've been using regular keys like a plebe for months. I hate everything about the inconvenience of using keys and was living in constant fear of accidentally locking myself out of the house.

I finally saw the August smartlock as an ad and a lightbulb went off. It looked like it would actually fit! I purchased the one with the keypad to mount outside and installed it two days ago. I LOVE this smartlock. It works exactly as expected and I have no concerns. No more digging through my purse for my keys while I'm carrying groceries and coffee and holding a dog leash etc etc! No more constant fear of locking myself out! And I can share access to a friend/pet sitter/etc!

The auto-unlock feature slaps. When I get home from work and approach my front steps the door just unlocks for me. The only thing I've found that could be slightly better is that when I'm walking my dog around the neighborhood, it won't consider me in "away" mode because I didn't go that far. It won't auto-unlock unless you go into away mode first. With that said it's not a big deal because I have the keypad I can use so I can still enjoy key-free walks.

It also has wifi built into it already which is nice if you want to be able to lock/unlock your door remotely. However as others have mentioned, the wifi can drain the batteries faster. This model (4th gen) allows you to disable wifi altogether or link it with a bluetooth/wifi bridge instead if you'd prefer to extend battery life. I personally just turned the wifi off. Since I have the keypad if I ever needed an unplanned guest to enter, I'll just give them a code.

I will say as far as installation, I wouldn't say it was hard but it took me like 30 minutes, not 10. Mostly because I didn't realize the pointy bit on the big round part had to be pointing more towards the hinge side of the door when you first put it on. Like if I'm facing my door and the hinges are on the left, the pointy bit has to be pointing at about 10:00 when placed. I was pointing it the other direction and it wouldn't lock that way. I had to watch a few youtube tutorials to figure out what I was doing wrong.

I am grateful for this product. I think it's the only thing on the market that would have fit my door and it works completely as expected if not better. It seems like such a small thing but it's really life-changing and I've honestly been in a good mood all week because I no longer have to deal with the hassle of keys.
Images in this review
Customer image
Customer image
3 people found this helpful
Report

Top reviews from other countries

Translate all reviews to English
Stephanie
5.0 out of 5 stars Love it
Reviewed in Canada on February 12, 2024
Color: Matte BlackStyle: Lock + KeypadVerified Purchase
Miguel Canton
5.0 out of 5 stars Súper combo
Reviewed in Mexico on July 7, 2023
Color: Matte BlackStyle: Lock + KeypadVerified Purchase
Juan Fájer Cruz
5.0 out of 5 stars Excelente producto
Reviewed in Mexico on May 3, 2021
Color: Matte BlackStyle: WiFi Smart LockVerified Purchase
2 people found this helpful
Report
Ferds L
5.0 out of 5 stars Great
Reviewed in the United Kingdom on June 21, 2022
Color: Matte BlackStyle: WiFi Smart LockVerified Purchase
One person found this helpful
Report
Dylan olson
5.0 out of 5 stars So far, so good, love it!!
Reviewed in Canada on September 9, 2020
Color: SilverStyle: WiFi Smart LockVerified Purchase
One person found this helpful
Report