As an Amazon Associate I earn from qualifying purchases.
Best smart locks: check door fit, Wi-Fi band, hub and backup key first
Match the lock to your door and network before you compare features
Measure the door first; the four makers’ limits overlap but differ. Thickness runs 1-3/8 to 2 inches for Kwikset (a thick-door kit covers 2 to 2-1/4), 1-3/8 to 2-1/4 for Yale, and 1-3/8 to 2-11/64 for Aqara and Tapo. Yale, Aqara and Tapo give backsets of 2-3/8 or 2-3/4 inches, while Kwikset’s page says adjustable. Kwikset says its holes are 1-1/2 or 2-1/8 inches, Yale 2-1/8 or 1-1/2, and Aqara 2-1/8. Tapo’s page gives no bore figure. Kwikset says to call if your door needs a drive-in latch. The table below lists all 14 models, each with its own guide.
Wi-Fi band and hub needs differ. Kwikset’s troubleshooting guide requires a 2.4 GHz WPA2 network, and its page says no hub is needed. Tapo’s datasheet lists 2.4 GHz Wi-Fi. Yale’s page says Wi-Fi models require 2.4GHz, although Amazon’s Yale bullet says 2.4 or 5 GHz. Aqara lists Bluetooth and Zigbee 3.0 for the U100, not Wi-Fi. Its manual says an Aqara Hub is required, and its page says remote features need an Aqara Zigbee 3.0 hub and Matter needs a Matter-supported Aqara hub. Amazon’s title says Matter over Thread, which none of the Aqara documents read describes.
Power and backup entry differ. Kwikset, Yale and Aqara list four AA batteries and say they are included. Tapo’s pack is rechargeable. All four keep a key backup: Kwikset’s SmartKey keyway, Yale’s KW1 keyway, and two keys each with Aqara and Tapo. Aqara and Tapo also list a USB-C port on the outside for emergency power.
Grades are reported as each maker words them. Kwikset’s page says ANSI Grade AAA and BHMA certified, Yale’s page says ANSI/BHMA Grade 2, Aqara’s FAQ lists BHMA Grade 3 among the tests the lock has passed, and Tapo’s datasheet lists BHMA Grade 3 while its page says ANSI/BHMA Certified with no grade. A test result and a certificate are different claims.
A keypad Wi-Fi deadbolt with no hub: Kwikset Halo Keypad
Kwikset lists up to 250 codes and a SmartKey keyway that its page says you can rekey yourself. Its app products work only in the United States and Canada, and changing the Wi-Fi network needs a factory reset. Kwikset’s warranty covers mechanical parts and finish for as long as the original buyer lives in the home where the lock was installed, and electronics for one year, and applies only to products bought from Kwikset or an authorized seller.
Read the Halo Keypad guide · Check the Halo Keypad on Amazon
A keypad lock with a door-closed sensor: Yale Assure Lock 2
Yale’s page lists a KW1 five-pin keyway with one key, while its installation guide’s box contents show two, and operating ranges of -22 to 140°F outside and 5 to 158°F inside. Yale’s installation guide includes a Door Checker page, and its page says Auto-Lock can wait until DoorSense detects that the door is closed. Yale’s warranty page gives the Assure series finish and mechanical cover for as long as the original buyer lives in the single-family home where it was installed and two years on electronics, and covers only locks bought from Yale or an authorized seller; it says to call 1-855-213-5841 to ask whether a seller qualifies.
Read the Yale guide · Check the Yale on Amazon
A fingerprint lock that needs an Aqara hub: Aqara U100
Aqara lists a fingerprint reader, Bluetooth and Zigbee. The manual says that connecting it directly to Apple Home, without an Aqara account, means unique features such as fingerprint recognition and auto-lock will not be available. Its page describes a wooden door and says modifications may be necessary if the door has different dimensions. Its IP65 rating applies to the keypad panel, and the FAQ says the indoor panel is for indoor use only. Its manual recommends original or alkaline batteries.
The linked listing is model SDL-D01, the lock alone; Aqara’s specifications put the E1 hub only in the DL-D01D kit. Amazon lists the seller as AqaraDirect, not Amazon. Aqara’s US warranty page gives smart door locks 12 months but covers only purchases from us.aqara.com and says an authorized reseller’s own policy applies otherwise, so ask Aqara and the seller what covers an Amazon order.
Read the Aqara guide · Check the Aqara on Amazon
A rechargeable fingerprint lock: Tapo DL105
Tapo lists a 7,800 mAh rechargeable battery and, in its datasheet, up to one year on Wi-Fi at 20 unlocks a day. Its datasheet says the battery charges only between 32 and 113°F, and it rates the outside assembly IP54 and the inside assembly not weatherproof. TP-Link’s US warranty page gives smart door locks one year and excludes products resold by unauthorized resellers.
Read the Tapo guide · Check the Tapo on Amazon
Before you buy or use
- Warranty and seller. Kwikset’s, Yale’s and TP-Link’s warranties exclude unauthorized sellers, and Aqara’s covers only its own US store, so ask each maker whether your Amazon seller qualifies.
- Fees. None of the maker pages and manuals read mentions a subscription or monthly fee for these four locks.
- Recalls. CPSC’s database, searched September 29, 2026, lists no recall naming Kwikset, Yale, Aqara or Tapo/TP-Link. Check cpsc.gov again before you order.
- Claims only. Every grade, weather rating and battery figure above is the maker’s own claim, and no certificate was read.
Based on published specifications, manuals and warranty terms, not lock tests. Sources checked September 29, 2026: Kwikset Halo Keypad (kwikset.com), its troubleshooting guide (kwiksetprodstorage.blob.core.windows.net), installation guide (kwiksetprodstorage.blob.core.windows.net) and warranty (kwikset.com), Yale Assure Lock 2 (shopyalehome.com), its installation guide (m.media-amazon.com) and warranty (shopyalehome.com), Aqara U100 specifications (aqara.com), Aqara U100 product page (aqara.com), manual (m.media-amazon.com) and FAQ (m.media-amazon.com), and Tapo DL105 (tapo.com) and its datasheet (m.media-amazon.com), and the Aqara (us.aqara.com) and TP-Link (tp-link.com) US warranty pages. Amazon links are affiliate links.
Compare every model in this category
Each row says who the model suits, its main strength and its main catch, taken from each guide's listed sources. Open a guide to confirm the exact model and what's included before you buy on Amazon.
| Product | Best for | Main strength | Main caveat |
|---|---|---|---|
| Schlage Encode Smart WiFi Deadbolt, Century Trim, Matte Black | Standard doors that need remote access without a bridge | Wi-Fi is inside the lock, so no separate bridge to power or replace | Full deadbolt replacement, with its own bolt, strike and key |
| August Wi-Fi Smart Lock, 4th Generation, Silver (AUG-SL05-M01-S01) | Renters and anyone who wants to keep their existing keys | Keeps your existing keys and leaves the outside of the door unchanged | August states the device is not an ANSI or BHMA certified door lock |
| Yale Assure Lock 2 Keypad with Wi-Fi, Black Suede (YRD410-WF1-BSP) | Doors that pass Yale's printed Door Checker | With DoorSense fitted, Auto-Lock waits until the door is closed | Maker footnote says 2.4GHz only; the listing claims 2.4 or 5 GHz |
| Aqara Smart Lock U100 Fingerprint Deadbolt, Gray (SDL-D01) | Apple households already running an Aqara Zigbee hub | Apple Home Key works from an iPhone or Apple Watch after HomeKit setup | Remote access and voice control need an Aqara hub that is not in this box |
| eufy Security Smart Lock C220 Fingerprint Deadbolt (T8506) | Standard deadbolt doors that pass eufy's printed door checks | USB-C port on the exterior face powers the lock if the batteries die | The keyway can be copied but cannot be rekeyed, per the guide |
| Wyze Lock Bolt v2 Fingerprint Smart Deadbolt (WLCKB2) | Wyze video doorbell owners who want a fingerprint deadbolt | Maker states BHMA Certified Grade 2 on its own product page | No Apple Home support is listed by the maker for this lock |
| Tapo DL100 Smart Wi-Fi Deadbolt Door Lock (Keypad) | Standard deadbolt doors on a 2.4 GHz network where a physical keypad and app control are wanted | Backlit keypad with scramble codes and two backup keys | Tapo warns alkaline batteries may cause unlocking failures in the cold |
| Kwikset Halo Touchscreen Wi-Fi Smart Lock 99390-004 (Matte Black) | Doors within Kwikset's listed 1-3/8 to 2 inch range, on a 2.4 GHz WPA2 network in the US or Canada | UPC matches Kwikset's page, which publishes door limits and specs | Listing's door-thickness range differs from Kwikset's |
| Kwikset Halo Keypad Wi-Fi Smart Lock 938WIFIKYPD-15S (Satin Nickel) | Doors 1-3/8 to 2 inches thick on a 2.4 GHz WPA2 network, in the US or Canada | Up to 250 codes with date, weekday and one-time scheduling | Wi-Fi must be 2.4 GHz with WPA2, per the troubleshooting guide |
| eufy Security Video Smart Lock E330 T8531 (Silver) | Standard entry doors without a storm door, 35 to 55 mm thick, where a camera at the lock is wanted | Built-in 2K doorbell camera with 8 GB local storage and no subscription, per eufy | Not compatible with storm doors, per the user guide |
| eufy Security Smart Lock C30 T85D0111 (Contemporary, Black) | Standard US doors 35 to 55 mm thick where built-in Wi-Fi and a physical keypad are wanted | Built-in Wi-Fi with no bridge, plus Alexa and Google Assistant | Batteries are not included, per eufy's FAQ |
| Tapo DL110 Smart Wi-Fi Fingerprint Deadbolt Door Lock | Standard deadbolt doors on a 2.4 GHz network where fingerprint entry and a rechargeable battery are wanted | Removable rechargeable battery with USB-C emergency power outside | Battery charging range is 32°F to 113°F, per the datasheet |
| Tapo DL105 Smart Wi-Fi Fingerprint Deadbolt Door Lock | Doors 1-3/8 to 2-11/64 inches thick on a 2.4 GHz network where fingerprint entry is wanted | Tapo publishes door thickness, backset and clearance requirements | Battery charging range is 32°F to 113°F, per the datasheet |
| Aqara Smart Lock B50 DL-D12E (Black) | Doors 35 to 54 mm thick on a 2.4 GHz network, where Alexa or Google Home control without a hub is wanted | Built-in Wi-Fi with no hub for app, Alexa and Google Home | FAQ says the IPX3 front panel is not recommended for outdoor use |
What to check before buying
The smart lock guides here start with door fit: thickness, backset and bore limits from the maker's guide, and where the listing differs. They then check the Wi-Fi band and any hub needed for remote or Matter control, battery type and life claims, the lock's weather code and BHMA grade, which voice and home platforms it works with, and the warranty terms.
- Door fit limits. Check thickness, backset and bore against your door. Guides report listing thickness ranges that differ from the maker's guide, a lock that does not fit rounded latch holes, one not compatible with storm doors, and one with no fit figures published.
- Wi-Fi band and hubs. Many locks here join only 2.4 GHz networks; for one, the maker's footnote says so while the listing claims 5 GHz. Others need the maker's hub for remote access or Matter.
- Batteries and charging. Power ranges from four or eight AA cells to a rechargeable pack that charges only between 32 and 113°F. Guides also report a maker warning that alkaline cells can cause unlocking failures in the cold.
- Weather code and grade. Weather codes differ by source: IP53 against IPX3 for one lock. Guides also note which makers state a BHMA grade, and one maker that says its retrofit is not a certified door lock.
- Platforms and warranty. Guides report a lock with no Apple Home support, an Apple Home-only setup that disables fingerprint and auto-lock, electronics warranties of one or two years depending on source, longer cover only for maker-store purchases, and locks with no stated warranty length.
This page collects 14 smart lock guides from Plain Buy Guides. Each guide covers one exact Amazon listing: the maker's published specifications, what the listing says is included, the fit and installation limits that decide whether it suits you, and the main caveat, with every source listed and dated. Nothing here is based on hands-on testing, and no guide promises a price or stock level.
In the table above, the Best for column says who each model suits, and the strength and caveat columns carry the first point each guide makes. Open a guide before buying to confirm the exact model, the included parts and any conflict between the listing and the maker's documents, which each guide reports rather than settles. Side-by-side pages put the published facts of two models from this category in one place.
Compare the published specs
The main figures stated in each smart lock guide on this page, side by side, with each guide's sources behind them. Units are as published; nothing here was measured by us.
A table scrolls sideways when it is wider than the screen. Select a column heading to sort.
— means the guide does not state that figure. Only single figures in the column’s unit, with no mark, word or note in brackets, are sorted and counted below.
By the numbers
These cover only the 14 smart locks on this site, not the whole market. Ranges use the figures the guides state; the lowest and highest link to their guides, and the median is the middle of those figures. A model whose figure is missing, not applicable, more than one, marked, in words, in another unit or qualified in brackets is left out of that line.
- Batteries across our 14 smart locks: 4 AA: 8; Rechargeable: 3; 8 AA: 2; CR123: 1.
- Access codes across the 10 of our 14 smart locks that state one figure: 50 codes to 250 codes, median 150 codes. Lowest: Wyze Lock Bolt v2 Fingerprint Smart Deadbolt (WLCKB2). Highest: Kwikset Halo Touchscreen Wi-Fi Smart Lock 99390-004 (Matte Black) and 1 other.
Read the full Fit My Door Lock buying guide (fit-my-door-lock.pages.dev).
- Schlage Encode Smart WiFi Deadbolt, Century Trim, Matte Black
Schlage Encode BE489WB Century guide: built-in Wi-Fi with no hub, the exact door thickness and backset it fits, 100 codes, AA batteries and a key override.
- August Wi-Fi Smart Lock, 4th Generation, Silver (AUG-SL05-M01-S01)
August Wi-Fi Smart Lock 4th gen guide: it fits over your existing deadbolt and keeps your keys, Wi-Fi band wording, battery life, integrations and the BHMA note.
- Yale Assure Lock 2 Keypad with Wi-Fi, Black Suede (YRD410-WF1-BSP)
Yale Assure Lock 2 Keypad with Wi-Fi guide: Yale says 2.4GHz only, the listing says 2.4 or 5, plus the exact door checks, DoorSense and two warranty answers.
- Aqara Smart Lock U100 Fingerprint Deadbolt, Gray (SDL-D01)
Aqara Smart Lock U100 (SDL-D01) guide: nine ways in including Apple Home Key, but remote access needs an Aqara hub, Matter runs only via one and NFC cards are extra.
- eufy Security Smart Lock C220 Fingerprint Deadbolt (T8506)
eufy Smart Lock C220 guide: BHMA Grade 3 per the maker, eight AA batteries, a USB-C emergency port, and a keyway that can be copied but not rekeyed.
- Wyze Lock Bolt v2 Fingerprint Smart Deadbolt (WLCKB2)
Wyze Lock Bolt v2 (WLCKB2) guide: BHMA Grade 2, IP53, eight AA batteries, a USB-C rescue port, doors 35-55 mm thick, and no Apple Home in Wyze's lists.
- Tapo DL100 Smart Wi-Fi Deadbolt Door Lock (Keypad)
Tapo DL100 Wi-Fi keypad deadbolt guide: AA battery life claims and the cold-weather caveat, 2.4 GHz Wi-Fi, 200 codes, IP54 outside only, BHMA Grade 3 and door holes.
- Kwikset Halo Touchscreen Wi-Fi Smart Lock 99390-004 (Matte Black)
Kwikset Halo Touchscreen Wi-Fi deadbolt (matte black, 99390-004) guide: the door thickness conflict, 2.4 GHz WPA2 Wi-Fi, 250 codes, AA power, ratings and warranty.
- Kwikset Halo Keypad Wi-Fi Smart Lock 938WIFIKYPD-15S (Satin Nickel)
Kwikset Halo Keypad Wi-Fi deadbolt (938WIFIKYPD-15S): door thickness and holes it fits, the thick-door kit, 2.4 GHz WPA2 Wi-Fi, 250 codes, AA power and warranty.
- eufy Security Video Smart Lock E330 T8531 (Silver)
eufy Video Smart Lock E330 (T8531) guide: 2K doorbell camera with local storage, 10,000 mAh battery and USB-C port wording, the storm-door warning, fit and warranty.
- eufy Security Smart Lock C30 T85D0111 (Contemporary, Black)
eufy Smart Lock C30 guide: door holes and thickness it fits, AA batteries bought separately, the IP rating conflict, 100 codes, no HomeKit or Matter, 18-month cover.
- Tapo DL110 Smart Wi-Fi Fingerprint Deadbolt Door Lock
Tapo DL110 fingerprint Wi-Fi deadbolt guide: rechargeable battery life and charging range, 100 fingerprints, 2.4 GHz Wi-Fi, IP65 outside only, BHMA Grade 2 and size.
- Tapo DL105 Smart Wi-Fi Fingerprint Deadbolt Door Lock
Tapo DL105 fingerprint Wi-Fi deadbolt guide: the door thickness and backset it fits, its 7,800 mAh rechargeable battery and charging range, 2.4 GHz Wi-Fi and IP54.
- Aqara Smart Lock B50 DL-D12E (Black)
Aqara Smart Lock B50 (DL-D12E) guide: 2.4 GHz Wi-Fi with no hub, Matter only via certain Aqara hubs, the IPX3 outdoor caveat, door fit and a 6-month AA battery.