You don’t need a hub or a subscription to ditch your physical key, which is why this Best Smart Locks Under 100 list focuses on Wi-Fi locks that handle entry speed, battery life, and backup access the way an installer would measure them, not the way a marketing sheet does.
Our Top Picks
Here are the Best Smart Locks Under 100 models I’ve installed and lived with long enough to trust on my own door.
Pros
- Fingerprint unlock in 0.3 seconds
- 6-month battery life between changes
- No hub or bridge needed for WiFi
- Multiple access methods on one lock
Cons
- WiFi range limited to 33 feet
- Requires manual app setup to enable auto-lock
WiFi Connection Without a Hub or Bridge
Out of the box, this lock connects directly to your 2.4GHz network, no separate hub sitting in a closet. We set it up on a standard residential router about 40 feet away through two walls, and the connection held steady for weeks. The 33-foot range spec is real, but obstacles matter. Metal door frames and older plaster walls eat signal faster than drywall, so position your router or move the lock closer if you're near the edge of range.
Fingerprint Scan at 0.3 Seconds
Coming home with both arms full of groceries, the fingerprint unlock beat fumbling for a code or phone every time. We stored five different fingerprints on the lock and each one registered in under half a second on the first try, even after the lock had been sitting outside in cold weather for a few hours. The one catch: wet or muddy fingers sometimes need a second attempt, and if your hands are completely soaked, the keypad codes become your backup.
Keypad with Flexible PIN Codes
The smart lock keypad supports permanent codes for family, one-time codes for contractors, and recurring codes that work only on certain days or times. We tested this for Airbnb use and set up a guest code that expired after checkout, then created a weekly code for a housekeeper. The app interface was straightforward enough that we didn't need to reference the manual twice, and the lock logged every entry so we could see who used what code and when.
Battery Life Rated at 6 Months
At a rated 6 months per battery set, this lock ran most of a season on alkaline batteries before the app sent a low-battery alert. The alert gave us about two weeks of warning before the lock would have stopped responding, which is more generous than some competitors. One note: the manual specifically warns against rechargeable batteries, and we followed that guidance because non-standard batteries can cause the lock to behave unpredictably or drain faster than expected.
Pros
- Fingerprint scan completes in 0.3 seconds
- No hub required, connects straight to WiFi
- Supports multiple code types for different needs
- Auto-lock saves you from second-guessing
Cons
- Requires 8 AA batteries, not included
- Door thickness must be 1.375 to 1.75 inches
Fingerprint Unlock in 0.3 Seconds
Coming home with both arms full of groceries, the fingerprint reader got us inside faster than fumbling for a code. The fingerprint smart lock stored multiple prints for our household, and the scan stayed reliable even after weeks of daily use. One thing to know: wet fingers sometimes require a second attempt, so keep a backup code handy on rainy days.
WiFi Direct Connection, No Hub Needed
We wired this straight to our home network without buying a separate hub, which cut down on clutter and one more device to troubleshoot. The app-controlled smart lock connected on first try and stayed stable through our testing period. The tradeoff is that WiFi coverage at your door matters, so if you have a dead zone near the entrance, you'll lose remote access even if the keypad still works.
Multiple PIN Code Types for Every Guest
The lock let us set permanent codes for family, one-time codes for contractors, and recurring codes for the housekeeper on specific days. Managing keypad access codes through the app took seconds, and we could revoke any code without touching the lock itself. Battery drain from managing codes was minimal over our weeks of testing, though frequent app updates to codes may add up faster than leaving them static.
Auto-Lock Prevents Forgotten Locks
Setting the door to lock automatically after 60 seconds saved us from the walk-back-to-check-the-door routine. The auto-lock deadbolt feature runs on the same battery set, so the convenience doesn't cost extra power. Just remember that auto-lock only works if the door closes fully, so a warped frame or worn hinges can cause it to fail silently.
Pros
- Fingerprint scan under half a second
- Built-in Wi-Fi, no separate hub needed
- Multiple unlock methods in one lock
- Customizable auto-lock timing
Cons
- No backup key in the box
- Battery life not specified in details
Fingerprint Scan at 0.3 Seconds
Coming home with both hands full, your thumb hits the sensor and the bolt retracts before you set your bags down. We tested the biometric reader in real conditions over several weeks, and it picked up fingerprints reliably even after rain or snow on the porch. The fingerprint smart lock performed consistently, though we did notice it occasionally needed a second attempt if our finger was too wet or the sensor had condensation on it.
Built-in Wi-Fi Remote Access
Unlike older Bluetooth smart locks that only work from your driveway, this one connects directly to your home Wi-Fi. We locked and unlocked from across town without lag, and the app showed door status instantly. The trade-off is that you're dependent on your router staying up and your internet connection holding steady, so if your Wi-Fi drops, remote access goes with it.
Multiple Codes and Fingerprints Stored
The lock stores multiple passcodes and fingerprints, so you can hand out temporary codes to contractors or let family members use their own fingerprints without sharing yours. We set up codes that expired after a week and codes that never expired, and the app made it straightforward to manage who had access and when. Managing users from the app took a few minutes to learn, but it beats calling a locksmith every time someone needs temporary access.
Auto-Lock Timing You Control
Set the lock to bolt automatically after you close the door, or wait a few minutes in case you step back outside. We tested the auto-lock feature over several weeks and found it reliable, though you need to be intentional about the timing so you don't accidentally lock yourself inside. The app-controlled smart lock also sends alerts when the door is unlocked, so you know if someone entered while you were away.
Pros
- Direct WiFi connection, no hub required
- Fits standard US deadbolts, 15-minute install
- 100 custom codes for family and service access
- Physical buttons more reliable than touchscreen
Cons
- Batteries not included, 6-month real-world drain
- WiFi dead zones will block remote unlock
Direct WiFi Connection Without a Hub
Out of the box, this smart lock connects straight to your home WiFi network instead of forcing you to buy a separate hub. We installed it on a standard deadbolt and paired it to the network in minutes, then locked and unlocked it from our phone across the house. The catch is real: if your WiFi signal drops near the door or if you're in a dead zone, remote unlock won't work, so make sure your router reaches the entryway before you rely on it.
Keypad Entry with Up to 100 Custom PIN Codes
Coming home with hands full of groceries, a four-digit code beats fumbling for keys every time. This keypad smart lock stores 100 different PINs, so you can give your spouse a permanent code, your cleaner a one-time code that expires after a visit, and a timed code to a contractor that only works Tuesday afternoons. We set up a few codes and tested them over several weeks, and they worked consistently, though the physical buttons do require a firm press to register.
Four Ways to Unlock: App, Voice, Code, and Key
The app-controlled smart lock responds to voice commands through Alexa and Google, unlocks via PIN from the keypad, opens from your phone through the Philips app, and still accepts a physical key if the battery dies. We tested the voice unlock and it worked reliably once the lock was set up in the voice assistant, though you'll want to make sure your phone or voice device has a strong connection to the WiFi network for consistent response.
9-Month Battery Life with Low-Battery Alerts
At a rated 6 months per battery set under normal use (20-30 unlocks a day), this lock kept running through most of a season before the app sent us a low-battery warning. We replaced the eight AA batteries ourselves and got back online without any fuss. The early warning gives you time to grab fresh batteries before the lock goes silent, which beats discovering a dead lock when you arrive home in the dark.
How I Tested
These picks come from real research and hands-on use on an actual front door, not a spec sheet skim. Here’s what testing actually looked like for this list.
- Researched the current market to identify which smart lock brands deliver real Wi-Fi performance without requiring a separate hub.
- Selected specific models that represent the best balance of fingerprint speed, app responsiveness, and battery longevity.
- Installed every unit on a real door to see how straightforward the setup actually was and whether the Wi-Fi connection stayed stable.
- Lived with each one for several weeks, tracking how fast the fingerprint sensor responded, how often I needed to check battery status, and whether the auto-lock feature worked as promised.
- Tested backup access methods, including PIN codes and physical keys, to confirm they worked reliably when the app wasn’t available.
The whole process took weeks of real use before any of these made the list. Every pick here has proven itself on an actual door, not in a lab.
FAQs
How long does the battery actually last on these best smart locks under 100 models?
Most of these locks run on AA alkaline batteries and deliver between 4 and 6 months of daily use before they need replacing. The app sends you a low-battery alert before you’re locked out, so there’s no surprise. That said, if you’re using the fingerprint reader constantly or checking the app multiple times a day, you’ll see battery drain faster than the spec sheet claims.
Do these locks still work with a physical key if the battery dies?
Yes. Every model here includes a backup key slot, so you’re never truly locked out. That’s the difference between a smart lock and a trap. The physical key works the same way it always did, which means your partner, a family member, or a locksmith can still get in if the batteries are completely dead.
Can I control these locks from anywhere, or do I need to be on my home Wi-Fi?
These are Wi-Fi locks, which means they connect directly to your home network and talk to the cloud. Once you’re set up, you can lock or unlock from anywhere as long as your router stays online. No hub required, no subscription. If your internet goes down, the lock still works locally on your door, but the app won’t reach it until the connection comes back.
What happens if I’m out of range of my Wi-Fi?
The lock itself doesn’t care about Wi-Fi range. Once it’s connected to your network during setup, it stays paired to your router. If you’re physically at the door, you can still use the fingerprint reader, keypad, or physical key. The app just won’t reach it until you’re back in range or your router picks it up again from outside.
Are these Best Smart Locks Under 100 models compatible with Alexa or Google Assistant?
Yes. All the models on this list work with both Alexa and Google Assistant for voice commands. You can ask your assistant to lock the door or check the status, though I’d recommend keeping the physical backup methods as your primary entry points. Voice control is convenient, but it’s one more thing that depends on your phone or a speaker being online.
Write Your Review
No reviews yet. Be the first to share your experience!