--- product_id: 727698080 title: "August Wi-Fi (4th Gen) Smart Lock - Fits Existing Deadbolt in Minutes, Matte Black" brand: "august home" price: "¥59759" currency: JPY in_stock: true reviews_count: 6 category: "August Home" url: https://www.desertcart.jp/products/727698080-august-wi-fi-4th-gen-smart-lock-fits-existing-deadbolt store_origin: JP region: Japan --- # Built-in Wi-Fi, no hub needed Fits existing deadbolts in 10 mins Easy install, no handyman required August Wi-Fi (4th Gen) Smart Lock - Fits Existing Deadbolt in Minutes, Matte Black **Brand:** august home **Price:** ¥59759 **Availability:** ✅ In Stock ## Summary > 🔐 Upgrade your door, upgrade your life — smart security made sleek and simple. ## Quick Answers - **What is this?** August Wi-Fi (4th Gen) Smart Lock - Fits Existing Deadbolt in Minutes, Matte Black by august home - **How much does it cost?** ¥59759 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/727698080-august-wi-fi-4th-gen-smart-lock-fits-existing-deadbolt) ## Best For - august home enthusiasts ## Why This Product - Trusted august home brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Instant Remote Access:** Grant or revoke entry from anywhere via the August app—perfect for busy professionals and trusted guests alike. - • **Hands-Free Convenience:** Auto-lock and unlock with DoorSense technology for effortless, keyless home entry that keeps you moving. - • **Seamless Smart Upgrade:** Transform your existing deadbolt into a high-tech security hub without changing your door’s exterior style. - • **Biometric-Grade Security:** Optional two-factor authentication with face or fingerprint ID ensures your home stays safe and exclusive. - • **Universal Smart Home Compatibility:** Works flawlessly with Alexa, Google Assistant, Apple HomeKit, and Samsung SmartThings for a fully integrated lifestyle. ## Overview The August Wi-Fi Smart Lock (4th Gen) is a sleek, matte black device that retrofits your existing deadbolt in just 10 minutes, adding Wi-Fi connectivity and hands-free locking. Compatible with major smart home platforms, it offers remote access control, biometric authentication, and automatic locking features—all without altering your door’s exterior look. Ideal for professionals seeking seamless, secure, and stylish home entry solutions. ## Description August Wi-Fi Smart Lock (4th Generation) and August app allow you to remotely lock or unlock your door, check your door status, permit a virtual guest key, and always know who is coming Connected with built-in Wi-Fi out of the box, the August Wi-Fi Smart Lock is easy to install, attaches to your existing deadbolt and holds your original key Review: ロックを使用するには、August homeにアカウントを登録する必要があります。ただし、登録するには米国の電話番号が必要でした（Googleで検索すると、それに関する記事がたくさんあります）。そのため、日本ではこのアプリを使用する方法がなく、販売者が販売するべきではありません。 Review: I’ve been using August for a long time. Best thing about it is that from the outside looks like a normal lock. My old August failed about 6+ years in. After I did some research I found out August to be the most affordable replacement. I did not hesitate and purchased my 2nd unit. Only to find out that its installation is geo fenced to US and Canada only. Outside, must be trough Yale App, which may NOT support August in all countries. Took a bit of network creativity, but I finally managed to set it up. All good when it ends well,…. just a reminder to those purchasing August from outside of US and Canada that it may not work straight out of the box. ## Features - UPGRADE YOUR EXISTING DEADBOT: August Smart Lock fits inside the door and makes regular deadbolts smarter, safer and more convenient. Keep your keys in the case (but not required) - Accessible via AUGUST APP: Forget about copying keys. Quickly and easily share permanent, planned, or temporary access to your home with friends, family and other people you can trust. No need to place keys under the doormat - EASY TO INSTALL ON ANY DOOR: Installs in just 10 minutes without being handy. August Locks fit perfectly on most single cylinder deadbolts and are not larger than original thumbturns - AUTOMATIC LOCK AND UNLOCK: August Wi-Fi Smart Lock is completely hands-free (optional). Auto-Lock and DoorSense automatically locks your home in place after a certain amount of time when the door is closed - Works seamlessly with Smart Home: Built-in Wi-Fi allows you to operate your favorite voice assistant and lock including desertcart Alexa, Google Assistant, Apple HomeKit, Samsung SmartThings and more - AWARD WINNING SMART LOCKS: CNET Editor's Choice 2 years consecutive (2020/2021), Best Smart Lock by Good Housekeeping (2021), Tom's Guide (2021) - KEEP YOUR HOUSE CURBS ATTRACTIVE - Get the Smart Lock feature without changing the exterior look of your entryway. August Smart Lock is installed on the inside of the door only so there is no need to adapt to the design of the front door - Add a keypad to use with cord: When your smartphone is not in use, simply connect the Smart Keypad (sold separately) and unlock the door with a unique cord. Great for small children, home government, dog walkers, and other one-time guests - FACE OR FINGER PRINTED IDS FOR ADDED SECURITY: Two Element Authentication using mobile phone biometric authentication (optional) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B082VXRND2 | | Amazon Bestseller | #472,117 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #4,380 in Hardware Locks #5,678 in Door Hardware & Locks | | Are Batteries Included | Yes | | Battery Type | Lithium Metal | | Brand | August Home | | Color | Black | | Customer Reviews | 3.9 3.9 out of 5 stars (4,209) | | Date First Available | May 17, 2020 | | Included Components | August Wi-Fi Smart Lock, Battery, Mounting Hardware | | Item Weight | 181 g | | Laser Class | Biometric verification, No Hub Required, Wi-Fi | | Material | Metal | | Model Number | AUG-SL05-M01-G01 | | Name List for Name Plates | WiFi Smart Lock | | Product Dimensions | 7.11 x 7.11 x 6.99 cm; 181.44 g | | Quantity | 2, 4 | ## Product Details - **Brand:** August Home - **Item dimensions L x W x H:** 7.1 x 7.1 x 7 cm - **Lock Type:** Biometric Tablets - **Material:** Metal - **Special Feature:** Biometric verification, No Hub Required, Wi-Fi ## Images ![August Wi-Fi (4th Gen) Smart Lock - Fits Existing Deadbolt in Minutes, Matte Black - Image 1](https://m.media-amazon.com/images/I/61q0KLYHm8L.jpg) ![August Wi-Fi (4th Gen) Smart Lock - Fits Existing Deadbolt in Minutes, Matte Black - Image 2](https://m.media-amazon.com/images/I/61kljVhwy9L.jpg) ![August Wi-Fi (4th Gen) Smart Lock - Fits Existing Deadbolt in Minutes, Matte Black - Image 3](https://m.media-amazon.com/images/I/61vuJklFGYL.jpg) ![August Wi-Fi (4th Gen) Smart Lock - Fits Existing Deadbolt in Minutes, Matte Black - Image 4](https://m.media-amazon.com/images/I/71Fm+Xhf+tL.jpg) ![August Wi-Fi (4th Gen) Smart Lock - Fits Existing Deadbolt in Minutes, Matte Black - Image 5](https://m.media-amazon.com/images/I/61ScXvtLh+L.jpg) ## Questions & Answers **Q: My front door is sticky and when it's only partially closed the deadbolt can be sticky. Will this be a problem?** A: The stickiness of the door if you are talking about the door being hard to close, is probably due to the hinges being misaligned or settling of the home over time which unfortunately goes beyond any lock, but after forcing it closed can still leave the lock misaligned with the hole in the frame that the lock bolt goes in to. However if the door closes all the way easily the stickiness of deadbolt is likely caused by the inner workings of the deadbolt itself, since the August smart only replaces the thumb turn on the inner side of the door to add smart lock capacity to the same mechanical components of the lock, it will not fix this particular problem, and if it is indeed the deadbolt itself you will need to replace that. **Q: Is there any solution to be able to use with 5 ghz wifi?** A: Issue is only with those using mesh wifi systems, which use the same ssid for both 2.4 and 5GHz. 5GHz fades at distance before 2.4GHz. The best solution I've found is to simply walk far enough away from wifi that 5Ghz fades and the app (phone) is automatically switched to 2.4GHz. It usually takes about 20-30 yards to be out of 5GHz range and the phone will only see 2.4GHz and setup goes smoothly. Note: you only need to do this during initial setup. Then it works seamlessly. This technique works with smart switches too. **Q: Is there an optinon for key on both sides, so that a perp cannot just break window and reach around to unlock door?** A: If someone breaks a window to open the lock, the lock will notify you it has been unlocked manually. Any time one of these locks is unlocked, either manually from the inside or the outside, or with the August App or using HomeKit, my watch buzzes me, and my phone gets an alert as well. I'm using my Apple Watch for sleep tracking now, so I wear it while I'm sleeping. If someone unlocks a lock, I'll know. **Q: Is this compatible with kwikset downtown single cylinder deadbolt?** A: Yes, most of the Kwikset single cylinder deadbolts work fine. I had an old Kwikset lock and it worked fine with my August smart locks of the 2nd and now 4th generations. I believe that August has a list of tested locks on their website. but many other Kwitset lock, not listed there, work as well. ## Customer Reviews ### ⭐ Review *by A***ー on January 14, 2026* ロックを使用するには、August homeにアカウントを登録する必要があります。ただし、登録するには米国の電話番号が必要でした（Googleで検索すると、それに関する記事がたくさんあります）。そのため、日本ではこのアプリを使用する方法がなく、販売者が販売するべきではありません。 ### ⭐⭐⭐⭐⭐ Review *by C***S on May 13, 2024* I’ve been using August for a long time. Best thing about it is that from the outside looks like a normal lock. My old August failed about 6+ years in. After I did some research I found out August to be the most affordable replacement. I did not hesitate and purchased my 2nd unit. Only to find out that its installation is geo fenced to US and Canada only. Outside, must be trough Yale App, which may NOT support August in all countries. Took a bit of network creativity, but I finally managed to set it up. All good when it ends well,…. just a reminder to those purchasing August from outside of US and Canada that it may not work straight out of the box. ### ⭐⭐⭐⭐⭐ Review *by S***N 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. ## Frequently Bought Together - August Home, Matte Black Wi-Fi Connected Smart Keyless Entry Door Lock (4th Generation), Electronic Door Lock Fits Your Existing Deadbolt in Minutes, ‎AUG-SL05-M01-G01 - Kwikset 660 Deadbolt Deadbolt Lock, Polished Brass Round Exterior Keyed Front Entry Door, Single Cylinder Dead Bolt --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/727698080-august-wi-fi-4th-gen-smart-lock-fits-existing-deadbolt](https://www.desertcart.jp/products/727698080-august-wi-fi-4th-gen-smart-lock-fits-existing-deadbolt) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-10*