Shopping for the best smart door locks under $100 means deciding whether you need a full handle replacement or a deadbolt upgrade. Remote access, battery format, and hub requirements matter most for renters, families, and anyone managing a front door from away.
Pros
- Fingerprint access in under one second
- Built-in Wi-Fi, no bridge required
- Up to eight months with eight AA batteries
- BHMA Grade 3 certification
Cons
- Requires eight AA batteries
- IP53 protection, not fully waterproof
Pros
- Fingerprint recognition in as little as 0.3 seconds
- Stores up to 512 fingerprints and passcodes
- Temporary, scheduled, recurring, and one-time codes
- Customizable auto-lock from 5 to 60 seconds
Cons
- Gateway sold separately for voice and remote control
- App-based entry listed within a 5-meter range
Pros
- Fingerprint access, up to 50 stored fingerprints
- Built-in Wi-Fi, no hub for app control
- 18-month battery life
- ANSI BHMA certified zinc alloy
Cons
- 2.4 GHz Wi-Fi only
- Matter requires a compatible Thread hub
Pros
- Fingerprint, app, passcode, key fob, and key access
- 10-minute screwdriver installation
- Temporary and one-time passcode management
- Reversible handle for left- or right-handed doors
Cons
- Remote control needs a separately sold WiFi gateway
- App required for remote code management
Pros
- Fingerprint, passcode, app, key, and voice entry
- Built-in Wi-Fi, no extra hub needed
- Up to 100 custom passcodes
- Auto-lock adjustable from 10 to 180 seconds
Cons
- Batteries not included
- Supports 2.4GHz Wi-Fi only
Match the lock to your door hardware
A deadbolt model is usually the simpler choice when your existing handle already works well. The eufy Security Smart Lock C220, ULTRALOQ Bolt SE Wifi Smart Deadbolt Lock, and Philips Wi-Fi Smart Deadbolt Lock focus on replacing the deadbolt, while the Ulecoce U68 Fingerprint Keypad Deadbolt with Knob and Smart Door Handle Lock with Keypad combine entry hardware with electronic access.
Check the door edge, bore opening, handing, and available interior clearance before ordering. The eufy model fits most standard deadbolts and can fit bores under 54mm after removing its spacer. The Ulecoce and Yamiry options are designed for standard left or right-hand doors, while the ULTRALOQ model includes step-by-step DIY installation.
Pro Tip: Confirm whether you are replacing only a deadbolt or the entire handle assembly before removing hardware.
Remote access is not the same on every model
Built-in Wi-Fi is useful if you want to manage the door while away without buying a bridge. The eufy Security Smart Lock C220 and Philips Wi-Fi Smart Deadbolt Lock provide built-in Wi-Fi, while ULTRALOQ adds built-in Wi-Fi plus Matter over Thread support when paired with a compatible Thread hub.
Ulecoce and Yamiry can support remote or voice control through separately sold gateways. That extra device changes the installation budget and setup path, so it matters if your priority is giving a cleaner, guest, or renter a temporary code from another location.
| Lock type | Remote method | Best fit |
|---|---|---|
| Deadbolt | Built-in Wi-Fi | Existing handle |
| Handle set | App or gateway | Full hardware swap |
| Matter lock | Wi-Fi or Thread | Connected homes |
For broader smart-home compatibility, the ULTRALOQ model supports Apple Home, Alexa, Google Assistant, and Matter-enabled ecosystems. Philips supports Alexa and Google Assistant, while eufy supports Alexa and Google Voice Assistant without a bridge.
Before You Mount It: Do not assume voice control means remote control is ready out of the box. Check whether the model needs a gateway, a Thread Border Router, or a supported 2.4 GHz network.
Battery life and everyday access
Fingerprint entry is convenient for households that do not want to remember codes. The eufy model offers six access methods and runs around eight months with eight AA batteries, while ULTRALOQ lists battery life of up to 18 months with its Thread connection. Philips requires AA alkaline batteries, and batteries are not included.
Code management is especially useful for rentals and recurring visitors. Philips supports up to 100 custom passcodes, Ulecoce stores up to 512 fingerprints and keypad passcodes, and Yamiry supports permanent or temporary access records through its app.
Expert Examined
From Dana Whitfield
I keep seeing battery access treated as an afterthought in front-door planning. The safer habit is to set low-battery alerts, keep the physical backup key available, and confirm the interior thumb turn remains easy to operate.
Read more about Dana WhitfieldAuto-lock timing also deserves attention. Philips allows a ten to 180 second range, Ulecoce allows five to 60 seconds, and the ULTRALOQ model supports a preset timer. A setting that is too short can lock someone out while carrying groceries, while a setting that is too long may leave the door unsecured.
For background on physical door hardware, the strike plate guide explains why the frame matters as much as the electronic lock.
Security ratings and weather exposure
Certification and weather ratings answer different questions. BHMA Grade 3 on the eufy model indicates a certified hardware grade, while IP53 or IP65 describes resistance to dust and water exposure. The ULTRALOQ model lists ANSI BHMA certification and IP65 waterproofing.
These ratings do not replace a sound door frame, aligned latch, or sensible access practices. For more context about digital entry risks, read whether a smart lock can be hacked, and review how to reset a smart lock before handing one to a new occupant.
The UL Solutions site is a useful standards resource when you want to understand how safety marks differ from marketing descriptions.
Which lock fits your household
I would put the eufy Security Smart Lock C220 on a standard front-door deadbolt when built-in Wi-Fi, fingerprint entry, and integration with another eufy doorbell matter. Its physical key, keypad, app, watch, and voice options also give a household several fallback methods.
I would point you to the ULTRALOQ Bolt SE Wifi Smart Deadbolt Lock for a connected home that already uses Apple Home, Alexa, Google Assistant, or Matter. Its listed battery life of up to 18 months and activity notifications suit owners who want fewer battery changes, though Matter over Thread features require compatible hub hardware.
For a full handle replacement, I would choose the Ulecoce U68 Fingerprint Keypad Deadbolt with Knob. Its temporary, scheduled, recurring, and one-time codes fit guests or rental access, and its three-year product warranty adds useful support for a lower-cost installation.
The Bottom Line
The mistake most buyers make is treating every smart lock as a drop-in deadbolt. A handle-set model changes more hardware, while a deadbolt model may leave an old handle, latch alignment, or weak strike plate as the real limitation.
First, measure the existing hardware and decide whether you need built-in Wi-Fi or can accept a separately sold gateway. Then choose the access method your household will actually use and keep a physical backup key available.
FAQs
Fingerprint entry is convenient for family members who want quick access without remembering a code. Keypads are better when you need temporary, scheduled, or recurring codes for guests, cleaners, or renters. The eufy Security Smart Lock C220, ULTRALOQ Bolt SE Wifi Smart Deadbolt Lock, and Philips Wi-Fi Smart Deadbolt Lock list built-in Wi-Fi. Ulecoce and Yamiry describe gateway-based remote or voice features, so check the required accessory before purchase. Use the specified battery type, enable low-battery alerts where available, and keep the physical key accessible. Battery life varies with usage, connection method, and access frequency. A BHMA rating refers to a hardware performance classification or certification, not a promise that every installation is secure. Door alignment, frame strength, and strike-plate installation still matter.Should I choose a fingerprint lock or keypad lock?
Can these locks work without a separate hub?
How should I handle batteries and power?
What does a BHMA rating mean?
Sources
- UL Solutions and product safety standards. www.ul.com
- National Fire Protection Association and home safety guidance. www.nfpa.org
- US Consumer Product Safety Commission and household safety information. www.cpsc.gov