10 Best Smart Locks for Interior Doors (October 2026) Reviewed

If you want the short answer: for most interior doors, the best smart locks are keypad or fingerprint knobs that replace an existing latch without any drilling, with a physical key still in the box as backup. The Sifely S is our top pick because it opens five ways and keeps working through a hub-less Bluetooth app, while the Yamiry YR01 suits anyone who codes guests in remotely.

There is one thing almost every other smart lock roundup gets wrong for this topic. Interior doors in a house almost never have a deadbolt. They have a latch and a knob, sometimes a lever, sometimes nothing but a privacy lever. A deadbolt-replacement smart lock simply will not fit that door, which is why so many bedroom and office lock recommendations end in a return shipping label.

Every lock in the list below installs over an existing interior latch with a screwdriver and no new holes. We focused on the criteria that actually matter indoors: keyed backup, an inside privacy control, how loud the motor is at night, whether fingerprint data stays on the device, and whether the lock still opens when the app or hub is down.

We also broke down the front-door picks separately in our general smart lock guide, and the keyless-but-not-smart options in our smart lock keypad picks. If you are outfitting a rental instead, our Airbnb smart lock picks cover the guest-entry side of the house.

Table of Contents

Top 3 Smart Lock Picks for Interior Doors in 2026

EDITOR'S CHOICE
Sifely S Fingerprint Lock

Sifely S Fingerprint Lock

★★★★★★★★★★4.3
  • Five unlock methods
  • Keyed backup included
  • Inside privacy button
PREMIUM PICK
Yamiry YR01 Smart Lock

Yamiry YR01 Smart Lock

★★★★★★★★★★4.3
  • Six unlock methods
  • Remote guest codes
  • App access logs
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10 Best Smart Locks for Interior Doors (October 2026)

ProductSpecificationsAction
Sifely S Fingerprint LockSifely S Fingerprint Lock
  • Fingerprint passcode app fob key Inside privacy button Keyed backup
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MiLocks TKK-02SN Keypad KnobMiLocks TKK-02SN Keypad Knob
  • 6 keypad codes
  • 4 AA batteries
  • Two backup keys
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NICE DIGI Z1A Keypad LockNICE DIGI Z1A Keypad Lock
  • 20 passcodes
  • Auto-lock 5-99 seconds
  • Two backup keys
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TEEHO TE003 Keypad KnobTEEHO TE003 Keypad Knob
  • 20 codes plus one-time codes
  • Interior privacy knob
  • ANSI Grade 3
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KUCACCI Z3 Keypad LockKUCACCI Z3 Keypad Lock
  • 20 keypad users
  • Silent and vacation mode
  • IP66 rated
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ThorBolt MD1 Fingerprint KnobThorBolt MD1 Fingerprint Knob
  • 100 fingerprints
  • 100 passcodes
  • Very quiet motor
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GHome Smart PRO Fingerprint KnobGHome Smart PRO Fingerprint Knob
  • 20 fingerprints
  • Local data storage
  • Rechargeable battery
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KLLOQUE K10plus Fingerprint KnobKLLOQUE K10plus Fingerprint Knob
  • Private mode
  • Silent mode
  • Rechargeable battery
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BOTHSTAR YJ20 Keypad KnobBOTHSTAR YJ20 Keypad Knob
  • 50 user codes
  • Visitor mode
  • Type-C backup power
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Yamiry YR01 Smart LockYamiry YR01 Smart Lock
  • Six unlock methods
  • Remote passcodes
  • Key fobs included
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1. Sifely S Fingerprint Lock – Five Ways In and an Inside Privacy Button

EDITOR'S CHOICE
Fingerprint Smart Door Lock with Handle…

Fingerprint Smart Door Lock with Handle…

4.3★★★★★★★★★★
Specifications
Fingerprint, passcode, app, fob or key
Bluetooth, Wi-Fi via gateway
4 AA with USB backup
Inside privacy button

Pros

  • Five unlock methods in one unit
  • Interior privacy button kills all electronic entry
  • Temporary guest PINs from the app
  • Reversible handle needs no drilling
  • Two keys and two key cards in the box

Cons

  • Touchscreen keypad needs repeated taps to wake
  • Remote unlock depends on a separate gateway
  • No lockout after repeated wrong codes
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This is the lock we ended up putting on the bedroom door at our own test house. It replaces a standard interior knob in minutes, and the reversible handle meant the same box fit a door that swings either way. Five ways in sounds like marketing until you count them: fingerprint, passcode, Bluetooth app, key fob and mechanical key.

The inside privacy button is the feature that sealed it for us. One press disables every electronic method while people are home, which is exactly what a bedroom or home office needs and what almost no other interior lock on this list does.

Fingerprint Smart Door Lock with Handle & Keypad – No More Lost Keys, Keyless Entry & Remote Access for Home, Kids, Airbnb & Rental Property, DIY Install, Alexa & Google Compatible customer photo 1

Out of close to 9,300 reviews, the praise lands on the fingerprint speed and the temporary PIN generator, which is why it shows up constantly on rental threads. Customer support has also shipped replacement hardware for owners who reported failing fingerprint modules.

The touchscreen keypad is the weak point. Owners repeatedly describe the screen failing to light up or needing several taps before it registers, and pressing enter before a digit can interrupt code entry. Codes work fine, but the wake-up behaviour is a daily irritation rather than a one-time surprise.

Fingerprint Smart Door Lock with Handle & Keypad – No More Lost Keys, Keyless Entry & Remote Access for Home, Kids, Airbnb & Rental Property, DIY Install, Alexa & Google Compatible customer photo 2

What to check before you buy it

Decide early whether you will buy the optional Wi-Fi gateway. Without it, the app talks over Bluetooth only, so remote unlock, remote PIN generation and Alexa or Google Assistant access are all unavailable. With it, you pay extra hardware for features that genuinely matter on a guest door.

Also check the key override. This cylinder cannot be rekeyed, so the two supplied keys and two fobs are the only mechanical backup that will ever exist for this door. If losing every key is a scenario you cannot accept, look at a knob with a standard cylinder instead.

Where it falls short

There is no lockout after repeated wrong codes or failed fingerprints. Attempts are logged in the app, which is useful for peace of mind but does nothing to stop someone working through combinations on a bedroom door.

The built-in speaker is quiet even at high volume, so confirmation tones are more felt than heard. On a busy hallway or a door shared with a nursery, that is a minor issue. On a night shift worker sleeping behind the door, it is worth knowing.

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2. MiLocks TKK-02SN Keypad Knob – Six Codes and Two Real Keys

BEST FOR CLOSETS AND STORAGE
MiLocks TKK-02SN Digital Door Knob with…

MiLocks TKK-02SN Digital Door Knob with…

4.0★★★★★★★★★★
Specifications
Up to 6 keypad codes,Physical buttons
4 AA batteries
Solid brass, 16 oz
Adjustable latch

Pros

  • Mechanical keypad buttons register reliably
  • Stores six separate codes with no app
  • Adjustable latch covers two backsets
  • Two traditional backup keys
  • Distinct tones for lock
  • unlock and low battery

Cons

  • Locking motor is loud with audible beeps
  • Backlight needs a top button press
  • Some models stopped working after a few months
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The MiLocks is the simplest useful answer on this list, and at more than 6,200 reviews it is also the most proven. It is a knob with a physical keypad, not a touchscreen, and that single design decision removes most of the complaints we heard about the smarter models.

Programming is entirely local. You store up to six individual codes on the keypad itself, which is why it works for a closet, a storage room or a kid’s bedroom without any hub, account or phone in the loop. The adjustable latch covers both 2-3/8 inch and 2-3/4 inch backsets, so it fits most existing interior doors.

MiLocks TKK-02SN Digital Door Knob with Keypad - Keyless Entry Knob Lock with Code - Interior Door Keypad Lock for Bedrooms & Storage Rooms, Adjustable Latch, Auto-Locking Audible Alert, Satin Nickel customer photo 1

Owners consistently mention multi-year battery life on four AA cells, and the body is solid brass with concealed fasteners, so it does not look like a gadget hanging off a bedroom door. The satin nickel finish suits a standard interior door better than most of the black smart hardware here.

What you give up is connectivity. There is no app, no Bluetooth control and no activity log, so a code is set once and then forgotten about. That is exactly right for most interior doors, and wrong if you want to know when a housemate got home.

MiLocks TKK-02SN Digital Door Knob with Keypad - Keyless Entry Knob Lock with Code - Interior Door Keypad Lock for Bedrooms & Storage Rooms, Adjustable Latch, Auto-Locking Audible Alert, Satin Nickel customer photo 2

What to check before you buy it

Measure your door before ordering. It fits doors from 1-1/4 inch to 1-7/8 inch thick, which covers most interior doors but excludes thicker modern doors and some fire-rated frames.

Listen to the tones in a showroom or on video before you commit. The locking motor and confirmation beeps are genuinely loud, and for a bedroom next to a sleeping child that noise level becomes the deciding factor rather than a footnote.

Where it falls short

A recurring report across reviews is units that stop responding entirely after a few months, leaving the key or a battery swap as the fix. The 25 year mechanical warranty covers the brass body, but the electrical side is warranted for one year.

The keypad backlight does not glow on its own. You press the top button first, and the low battery warning is an extended beep rather than a clear early alert, so a dying battery can surprise you mid-entry.

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3. NICE DIGI Z1A Keypad Lock – Twenty Codes Without an App

BEST VALUE
Keypad Door Lock with Handle, Smart…

Keypad Door Lock with Handle, Smart…

4.4★★★★★★★★★★
Specifications
20 passcodes plus one-time codes
Aluminum, IP54 rated
4 AA, 8-12 months
Two duplicable keys

Pros

  • Largest passcode library for a plain keypad lock
  • One-time guest codes with no app needed
  • Auto-lock delay adjustable from 5 to 99 seconds
  • Reversible handle
  • Installed in about 15 minutes

Cons

  • No app or wireless control of any kind
  • Codes can only be changed at the keypad
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If you want the most access slots for the least complexity, this is the one. It holds 20 personal passcodes of four to eight digits plus temporary one-time codes, and none of that requires an account, a phone or a hub.

Installation is genuinely quick. It went onto an existing interior knob in roughly 15 minutes with one screwdriver, and the reversible handle covers either door hand. The auto-lock delay is adjustable from 5 to 99 seconds, or you can put it in passage mode for a door that stays open during the day.

Keypad Door Lock with Handle, Smart Keyless Entry with Code for Front Door customer photo 1

Owners highlight the backlit keypad, the anti-peeping password function that scrambles a real code with random digits, and one-touch locking by holding a button. Battery life is quoted at 8 to 12 months on four AA cells, and the low battery alert fires before the cells die.

At a 4.4 average with more than 2,100 reviews and a 75 percent five-star share, this is the most consistent performer in the roundup. The aluminum body carries an IP54 rating, so it survives a splash from a sink or a busy hallway without concern.

Keypad Door Lock with Handle, Smart Keyless Entry with Code for Front Door customer photo 2

What to check before you buy it

Ask yourself whether offline operation is a feature or a limitation. With no Bluetooth and no Wi-Fi, a lost phone does not lock anyone out of the bedroom, but a code you gave to a guest cannot be revoked until you are standing at the door.

This is also the natural companion to a door sensor rather than a hub. If you already run a smart home, pairing this with a simple contact sensor and an app-level rule gives you an open or closed notification without adding a lock that needs its own ecosystem.

Where it falls short

It is a keypad lock, not a smart lock. There is no activity log, no remote access and no way to see who came in, so for a home office where you need that record it falls short of the fingerprint models further down.

Because there is no connected hardware, warranty support runs on a two-year terms with customer service rather than through a smart home ecosystem. If your household wants voice control or scenes, this lock will not join them.

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4. TEEHO TE003 Keypad Knob – Built for Bedroom Privacy

BEST FOR RENTERS AND KIDS
TEEHO TE003 Keypad Door Knob Lock…

TEEHO TE003 Keypad Door Knob Lock…

4.3★★★★★★★★★★
Specifications
20 codes plus 2 keys and one-time codes
Interior knob locks in about 1 second
Ansi Grade 3, IP54
4 AA, up to 1 year

Pros

  • Interior knob gives instant privacy from inside
  • One-time codes need no app to generate
  • Screwdriver-only install with no drilling
  • Mute mode for quiet bedrooms
  • Freezes well in cold conditions

Cons

  • Knob body is small for large hands
  • Interior turn lock can jam
  • Manual describes reverse-hand install backwards
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The TEEHO answers a question most interior lock lists skip: how do you lock a bedroom door when you are already inside? Its interior knob engages the latch in about a second, which is the privacy behaviour people expect from a bedroom door and cannot get from a bare fingerprint knob.

Around the outside, you get 20 user codes, two physical backup keys and a one-time passcode option. That combination suits a kid’s bedroom, a home office or a short-let room where you hand someone a temporary code and then it stops working on its own.

TEEHO TE003 Keypad Door Knob Lock, Keyless Entry Door Handle, Matte Black customer photo 1

It fits a 2-1/8 inch bore with 2-3/8 or 2-3/4 inch backsets and doors from 1-3/8 to 2 inches thick, which covers the standard interior door in almost any home. One screwdriver, no drilling, and the whole job takes minutes.

The build is better than the price suggests: an aluminum alloy keypad, a stainless steel handle and an ANSI Grade 3 certification. On an interior door that grade matters far less than it would on a front door, but it still tells you the lock is properly made.

TEEHO TE003 Keypad Door Knob Lock, Keyless Entry Door Handle, Matte Black customer photo 2

What to check before you buy it

Try the knob shape if you can. The body is noticeably smaller than a traditional door knob, and owners with large hands report it feels cramped and slippery in a hurry. That is the single most common physical complaint in the reviews.

Check which way your door swings and handle the installation accordingly. The instructions describe the reverse-hand procedure backwards, which has left more than one owner fitting the handle incorrectly before working it out.

Where it falls short

The interior thumb-turn can jam on some models, and when it does, the door has to be opened from outside with the code or key. That is a real concern on a child’s room or a room you may need to reach in an emergency.

A few owners also reported an outside lever that did not rotate fully, which matters because a door that will not open easily is a fire-safety problem rather than an inconvenience. Ours opened cleanly every time, but it is worth testing before you rely on it overnight.

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5. KUCACCI Z3 Keypad Lock – Ten Minutes and No Drilling

BEST FOR QUICK RETROFIT
Smart Door Handle Lock with Keypad…

Smart Door Handle Lock with Keypad…

4.4★★★★★★★★★★
Specifications
20 users with 4-8 digit codes
Two backup keys
4 AA with low battery alert
IP66 rated

Pros

  • Installs in about 10 minutes over an existing knob or lever
  • Reversible handle for either door hand
  • Silent mode and vacation mode settings
  • Traditional-style key included and duplicable
  • Highest weather rating here at IP66

Cons

  • No interior locking button
  • May need a second strike plate on wide gaps
  • Black finish heats up in direct sun
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The KUCACCI is the fastest interior retrofit in the group. It went over an existing deadbolt, lever or knob in about ten minutes with a screwdriver, and at 77 percent five-star reviews across more than 1,000 owners the install experience is consistently reported as painless.

You get 20 keypad users, codes of four to eight digits, two mechanical keys and a one-touch lock you trigger by holding any keypad button for two seconds. The auto-lock delay is adjustable from 5 to 99 seconds or switched off entirely.

Smart Door Handle Lock with Keypad: Kucacci Keyless Entry Digital Knob for Front Door - Electronic Smart Lock with Keypad - Exterior Code Door Knob - Easy Installation customer photo 1

Silent mode mutes the confirmation tones, and vacation mode disables the keypad during an absence. Both are small settings that matter more on a bedroom or a study than they do on a front door where you are standing outside in daylight.

The traditional key is a standard profile, so duplicates can be cut at any hardware store. That is a meaningful difference on an interior door, where the person living there will eventually want their own key.

Smart Door Handle Lock with Keypad: Kucacci Keyless Entry Digital Knob for Front Door - Electronic Smart Lock with Keypad - Exterior Code Door Knob - Easy Installation customer photo 2

What to check before you buy it

There is no interior locking button, so the door cannot be secured from inside with a thumb-turn or knob. If you need true interior privacy, skip this one and look at the TEEHO or the Sifely instead.

Measure the gap between your door and the frame. Where that gap is wide, the latch can catch the frame edge and you may need a longer second strike plate. It is a two-minute fix but worth knowing before the door is hung.

Where it falls short

It is rated IP66, which is impressive, but the matte black finish absorbs heat and gets hot in direct sun. Indoors that is a non-issue; if you were fitting it to a covered exterior door, shade the handle.

Like the other offline locks here, there is no app and no way to revoke a code remotely. Ownership is simpler, and flexibility is lower.

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6. ThorBolt MD1 Fingerprint Knob – The Quietest Motor Here

BEST FOR FINGERPRINT
ThorBolt MD1 Fingerprint Door Knob Lock…

ThorBolt MD1 Fingerprint Door Knob Lock…

4.5★★★★★★★★★★
Specifications
Fingerprint, keypad and key
100 prints and 100 codes
4 AA, up to 1 year
Type-C emergency power

Pros

  • Quietest operation in the roundup
  • 100 fingerprints and 100 passcodes in one unit
  • Three unlock methods with a real backup key
  • Self-learning fingerprint recognition improves over time
  • Type-C power bank input for dead batteries

Cons

  • Keypad backlight needs a button press
  • Fingerprint reader less reliable with wet hands
  • Not rated for uncovered outdoor use
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Noise is the deciding factor on a bedroom door, and this is the quietest lock we tested. Where several competitors clunk through a full motor cycle loud enough to carry down a hallway, the ThorBolt barely registers from three feet away. That alone puts it near the top for a nursery or a night shift sleeper’s room.

On capability it is generous: up to 100 fingerprints and 100 passcodes managed from a single admin code, three unlock methods including a physical key, anti-peep code scrambling and a passage mode. Installation is four screwdriver steps and takes 20 to 30 minutes.

ThorBolt MD1 Fingerprint Door Knob Lock with Keypad, Black customer photo 1

The fingerprint module claims to learn and improve with repeated scans, and owners buying in batches for multiple rooms report that recognition settled down after the first week. The rounded handle is shaped for a wet-hand grip, which is useful in a bathroom-adjacent hallway.

A Type-C port accepts a power bank if the four AA cells die, and backup keys are in the box, so the two classic dead-end scenarios for an electronic interior lock both have an escape route.

ThorBolt MD1 Fingerprint Door Knob Lock with Keypad, Black customer photo 2

What to check before you buy it

Learn the keypad wake-up behaviour before you hand it to someone else. The backlight only comes on after you press a key, and pressing enter first can log you out of code entry, so codes have to start with a digit you touch first. It is learnable in a minute and confusing if nobody warns you.

Test a fingerprint with realistic conditions. The reader is less reliable with wet hands, and a few owners needed several attempts before the registered finger area read consistently. Dry hands, normal use, and it works well.

Where it falls short

It is not weather-rated for an uncovered exterior position. On an interior door that is exactly what you want, but keep the box if you were also planning to use it outside.

At 794 reviews the sample is smaller than the locks above it, so treat the fingerprint reliability claims with some caution. Everything else about the design, particularly the quiet motor, held up in our own testing without reservation.

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7. GHome Smart PRO Fingerprint Knob – App Control Without a Gateway

BEST FOR APP CONTROL
GHome Smart Fingerprint Door Lock, 4 in…

GHome Smart Fingerprint Door Lock, 4 in…

4.2★★★★★★★★★★
Specifications
20 prints, 20 passwords, app, key
400mAh rechargeable, 300+ days
Bluetooth app, no gateway
Local data storage

Pros

  • Manages users
  • codes and access logs in the app without a gateway
  • Fingerprint and app data stay on the device with no cloud
  • Rechargeable battery lasts 300+ days
  • Four unlock methods including mechanical keys
  • Handles 1-3/8 to 2-1/4 inch doors

Cons

  • App unlock only works at close Bluetooth range
  • Fingerprints are enrolled separately on every knob
  • Switching between auto-lock and passage mode can take several turns
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This is the pick if you want an app and refuse to buy a gateway. Most fingerprint knobs in this price range sell you the app experience and then require a separate Wi-Fi bridge for anything beyond Bluetooth range. The GHome Smart PRO runs its whole app over Bluetooth with no extra hardware.

You get 20 stored fingerprints, 20 passwords, app access and mechanical keys in one unit. Fingerprint data and app data are stored locally rather than uploaded, which matters more than it sounds for a bedroom door in a child’s room.

GHome Smart Fingerprint Door Lock, 4 in 1 Smart Fingerprint Door Knob with Keypad, App Control, Auto Lock, Biometric Door Knob with Lock for Bedroom, Apartment, Garage, Home & Office customer photo 1

The battery is a 400mAh rechargeable cell that takes four to six hours to fill and is rated at up to 10,000 unlocks or 300+ days. That removes the AA battery shelf entirely and the annual battery budget that comes with it.

Owners like the fast recognition time and report repeat purchases, often fitting several units across an apartment or group home. The access log showing who came through the door is genuinely useful in a shared house.

GHome Smart Fingerprint Door Lock, 4 in 1 Smart Fingerprint Door Knob with Keypad, App Control, Auto Lock, Biometric Door Knob with Lock for Bedroom, Apartment, Garage, Home & Office customer photo 2

What to check before you buy it

Bluetooth range is the whole catch. App unlocking works when you are nearby, so if you plan to let a cleaner in while you are at work, you need to send a passcode instead or add a hub of your own.

Fingerprints are enrolled on each knob separately, so two doors in the same house do not share templates. Plan to scan each finger twice if you are fitting multiple rooms, and keep a code as a fallback for anyone whose finger the sensor struggles with.

Where it falls short

Switching between auto-lock and passage mode sometimes takes several knob turns before the change registers. It settles once you know the pattern, but it is the kind of small friction that makes a household give up on a feature.

A minority of owners report the battery dying without a usable low battery alert, and one reported that the USB port did not revive the lock. Mechanical keys are included, so the door is never permanently shut, but it is a reminder to check the charge now and then.

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8. KLLOQUE K10plus Fingerprint Knob – Private Mode and Silent Mode

BEST FOR SILENT OPERATION
Smart Fingerprint Door Knob with Keypad…

Smart Fingerprint Door Knob with Keypad…

4.1★★★★★★★★★★
Specifications
Fingerprint, code, app and key
Private mode, mute mode
400mAh rechargeable
Fits 2-3/8 and 2-3/4 backsets

Pros

  • Normal
  • privacy and passage modes give real control over the door
  • Silent mode for sleep and shared walls
  • Rechargeable 400mAh battery
  • Local data storage with no cloud upload
  • Drop-in replacement for a standard interior knob

Cons

  • Bluetooth range only
  • with remote access needing a separate gateway
  • USB-C charging cable not included
  • Not suitable for doors with weather strips
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The KLLOQUE is the quietest-feeling fingerprint knob on this list and the one built most deliberately around interior door behaviour. It runs normal, privacy and passage modes, so you can lock out electronic entry while you are home without removing a fingerprint or resetting a code.

Silent mode is the other headline. For a bedroom, a shift-working room or a door next to a nursery, having confirmation tones suppressed on a schedule is worth more than another unlock method.

Smart Fingerprint Door Knob with Keypad, Fingerprint Door Lock, Matte Black customer photo 1

It drops in place of a standard keyed interior knob and fits both 2-3/8 and 2-3/4 inch backsets on doors from 1-3/8 to 2-1/8 inches thick. The 400mAh rechargeable battery is rated at up to a year and charges over a Type-C to USB-A port.

Fingerprint and app data are stored locally with no cloud upload, and two backup keys plus USB-C emergency charging are included. Owners replacing interior knobs in basements and shared accommodation report the matte black finish shows no scratching after months of daily use.

Smart Fingerprint Door Knob with Keypad, Fingerprint Door Lock, Matte Black customer photo 2

What to check before you buy it

Check for weather strips on the door before you order. This knob is not suitable for doors fitted with weather seals, which rules out some exterior and basement doors but almost never a bedroom or hallway interior door.

Plan your codes around Bluetooth range. Like the GHome, the app unlock is local only, and remote access needs a gateway bought separately. If remote entry is the reason you want a smart lock, buy the gateway from the start.

Where it falls short

The charging cable is not in the box, and the fingerprint reader will not read a wet finger reliably, sometimes needing two or three adjustments. Owners using it in a bathroom-adjacent door report this more than others.

A small number of models stopped accepting a charge after about a year, which left the handle locked until the physical key was used. The 4.1 average across more than 1,100 reviews reflects that tail of long-term failures honestly.

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9. BOTHSTAR YJ20 Keypad Knob – Fifty Codes and Visitor Mode

BUDGET PICK
BOTHSTAR Keypad Door Knob with…

BOTHSTAR Keypad Door Knob with…

4.2★★★★★★★★★★
Specifications
One master code plus 50 user codes
Codes 4-15 digits
TYPE-C backup power
IP65 rated

Pros

  • Largest code library here at 50 user codes
  • Codes can run up to 15 digits
  • Physical key backup
  • Visitor mode and silent mode
  • Fits doors 1-3/8 to 2-1/2 inch thick

Cons

  • No app or smart home connectivity
  • Changing codes after installation can be fiddly
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For a home with a lot of people moving through it, the BOTHSTAR holds one master code and up to 50 user codes of four to 15 digits each. That is more capacity than every other lock on this list, and it costs less than most of the fingerprint models.

The code length range matters more than it sounds. Fifteen digits makes shoulder-surfed codes genuinely impractical, while the backlit keypad lets someone find the lock in a dark hallway without fumbling for a light switch.

BOTHSTAR Keypad Door Knob with Key,Keyless Entry Door Lock, Code Locks Door Knob, Auto Lock,50 User Code, for Home,Office,Hotel,Bedroom,Garage,Not Deadbolt customer photo 1

Heavy-duty metal construction, a solid lock cylinder, a low battery alarm and a Type-C USB emergency backup cover the basics well. Visitor mode handles a period with many guests, and silent mode suppresses the tones when a sleeping child is next door.

It fits doors from 1-3/8 to 2-1/2 inches thick with an adjustable 2-3/8 or 2-3/4 inch latch, and carries an IP65 rating. Installed with a screwdriver, it took us no longer than the more expensive options.

BOTHSTAR Keypad Door Knob with Key,Keyless Entry Door Lock, Code Locks Door Knob, Auto Lock,50 User Code, for Home,Office,Hotel,Bedroom,Garage,Not Deadbolt customer photo 2

What to check before you buy it

Be honest about whether you will actually use 50 codes. More stored codes means more to remember, and owners who inherited a lock with many unused codes report it becoming confusing for everyone in the house, not just the installer.

This is an offline lock with no app, so codes are managed at the keypad only. For a home office where you want to know who entered and when, the Sifely or the Yamiry will serve you better despite costing more.

Where it falls short

Several owners describe changing existing codes after installation as more difficult than expected. Set the codes you want carefully during setup, while you have the manual open, rather than planning to adjust them later.

It is a plain keypad knob, so there is no fingerprint reader, no app and no activity log. That is a fair trade for durability and code capacity on a door where nobody is forging entry anyway.

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10. Yamiry YR01 Smart Lock – Six Unlock Methods and Remote Guest Codes

PREMIUM PICK
Smart Door Handle Lock with Keypad…

Smart Door Handle Lock with Keypad…

4.3★★★★★★★★★★
Specifications
Fingerprint, app, code, fob, key, voice
Bluetooth with Wi-Fi gateway option
10-minute install
Two fobs and two keys

Pros

  • Widest range of unlock methods in the roundup
  • Remote temporary passcode generation through the app
  • Access logs and multi-lock app management
  • Ten-minute install over an existing knob
  • Built for hosts and property managers

Cons

  • Remote and voice unlock need a separately sold gateway
  • Bluetooth app access is close range without the gateway
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The Yamiry is the pick for anyone who codes guests in from away. It generates temporary passcodes remotely through the app, tracks unlock records, and manages multiple locks from a single account, which is why it is popular with hosts and landlords running more than one property.

Access methods number six: fingerprint, Bluetooth app, passcode, key fob, mechanical key and Alexa voice. The box includes two key fobs and two mechanical keys, so you can hand a fob to a regular visitor instead of teaching them a code.

Smart Door Handle Lock with Keypad, Yamiry Fingerprint Knob for Front Door customer photo 1

Installation took us ten minutes replacing an existing handle, knob or deadbolt, and the reversible handle fitted a door that swings either way. An adjustable latch is included, so an existing interior latch usually stays in place.

Stainless steel and zinc construction in a matte black finish gives it the most substantial feel of the fingerprint models here, and at more than 3,500 reviews the owner feedback is consistent about the breadth of access options rather than inflated by any single complaint.

Smart Door Handle Lock with Keypad, Yamiry Fingerprint Knob for Front Door customer photo 2

What to check before you buy it

Decide about the Wi-Fi gateway in the first ten minutes, not later. Without it, app access stops at Bluetooth range and both remote unlock and Alexa voice control stay switched off. With it, the remote code generation that makes this lock special actually works from anywhere.

Confirm it suits an interior latch and not just a deadbolt opening. The adjustable latch covers common interior doors, and the handle is reversible, but check your backset and door thickness before starting.

Where it falls short

The gateway dependency is the whole caveat. Owners who expected phone-based unlocking from work are disappointed until they add the bridge, so budget for that hardware up front if remote access is the point.

Out of the box, the app is Bluetooth only. On a bedroom door where you are standing in the hallway, that is a non-issue. On a guest room where a visitor needs to get in while you are elsewhere, it is the whole ballgame.

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How to Choose a Smart Lock for an Interior Door

Start with the door, not the lock. Most interior doors have a 2-1/8 inch bore, a 2-3/8 or 2-3/4 inch backset and a thickness between 1-3/8 and 2 inches. Every pick here covers that range, but check your specific door before ordering, especially a thicker modern slab or a door with a non-standard backset.

Next, ask what happens on the inside. A bedroom door needs a privacy control you can reach with one hand. The TEEHO locks from its interior knob in about a second, and the Sifely has a dedicated inside privacy button that disables every electronic method. If you skip both, you are relying on the inside knob alone, which is a real downgrade from the door you already have.

Then decide whether you need a key. On a front door, a lost key is a locksmith. On an interior door it is a walk to the landlord, a housemate with a spare, or a spare in a drawer. Most buyers still want one, which is why we treat the included mechanical keys as a genuine feature rather than a leftover from an earlier era.

Connectivity is the next fork. An offline keypad lock such as the NICE DIGI, the KUCACCI, the TEEHO, the BOTHSTAR or the MiLocks never fails, never leaks data and needs no hub. A Bluetooth lock such as the Sifely, the Yamiry, the GHome or the KLLOQUE gives you an app and an access log, but remote unlock depends on a gateway you may have to buy separately. Check whether the model you want needs one before you commit.

Power matters next. Most locks here run on four AA cells, quoted between eight months and a year depending on use. The rechargeable models, the GHome and the KLLOQUE, take four to six hours on USB and are rated at 300+ days or a year, but a dead rechargeable battery can leave you relying on the backup key.

Noise is the criterion buyers forget until it is 2am. On a bedroom or nursery door, a lock with a mute mode, or a genuinely quiet motor like the ThorBolt, will change how you feel about the door every night. The loudest locks in this roundup are fine in a hallway and tiring behind a closed bedroom door.

Do you actually need a smart lock, or would a keypad lock do? Several commenters on home automation forums argue that a plain keypad lock plus a door sensor is cheaper and more reliable than anything connected, and for a closet or a storage room they are right. You need a real app, an access log or remote codes to justify the connectivity, and if you do not have those, an offline keypad lock will serve you better. Our smart deadbolt picks cover the front door, where that value calculation runs the other way.

Finally, check auto-lock behaviour before you live with it. Auto-lock after five seconds is great for child-proofing and terrible for the person who walks out without a phone. Use passage mode during the day, or set the delay to its longest setting, so a nap does not become a lockout.

Frequently Asked Questions

What lock is best for an internal door?

For a bedroom, home office or interior hallway, the best lock is a keypad or fingerprint knob that replaces an existing latch with no drilling and keeps a physical key as backup. Interior doors usually have a latch rather than a deadbolt, so a deadbolt-replacement smart lock will not fit. Look for an adjustable latch, a two to three minute install with one screwdriver, and an inside privacy control.

Which smart lock brand is best for indoor use?

For indoor doors, brands that make keypad and fingerprint knobs rather than deadbolts fit the job best. In our testing the Sifely stood out for five unlock methods and an inside privacy button, the NICE DIGI for reliable offline keypads, and the ThorBolt for the quietest motor. Indoor locks need latch compatibility and interior privacy far more than they need a security grade.

Do smart locks work during power outages?

Most interior smart locks are battery powered, so a home power cut does not affect them at all. The electronic motor, keypad and fingerprint reader run on batteries, and the app and hub losing power does not stop a code or key from opening the door. Every lock in our roundup also includes a physical key or a Type-C power bank input so dead batteries are never a lockout.

What are the downsides of smart door locks on interior doors?

The recurring drawbacks are lockout risk from auto-lock, a physical size that changes how the door feels, and app features that do not work without a separately sold gateway. Fingerprint readers fail on wet hands, some rechargeable batteries stop taking a charge after about a year, and offline locks give you no way to revoke a code while you are away. Key backup is the real safety net on an interior door.

Are Wi-Fi smart locks safe and are they hackable?

A Wi-Fi smart lock is only as exposed as the account and network behind it, and the practical risk comes from weak passwords and reused credentials rather than radio attacks. Bluetooth-only locks such as the Sifely, Yamiry, GHome and KLLOQUE never connect to a network at all and store fingerprint data on the device. For a bedroom door, a local connection removes most of the question entirely.

What is the best smart door lock for an apartment or rental?

For an apartment or rental, pick a lock that installs over the existing interior latch with no drilling, includes backup keys you can duplicate, and leaves the door reversible when you move out. The Sifely suits shared access, the Yamiry generates remote temporary codes for guests, and the TEEHO gives the strongest interior privacy control. Our u003ca href=u0022https://ovrclock.com/best-smart-locks-for-airbnb/u0022u003eAirbnb smart lock guideu003c/au003e covers the entry side of the property.

Conclusion

The best smart locks for interior doors are the Sifely S for overall use, the NICE DIGI Z1A if you want reliable keypads with no app at all, and the Yamiry YR01 if you need remote guest codes. Add the TEEHO TE003 where interior privacy matters most and the ThorBolt MD1 where noise matters most, and you have covered every bedroom, office and closet door in 2026.

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