How to Choose a Keyless Door Lock
Keyless door locks offer convenience and enhanced security, but choosing the right one requires understanding connectivity, power, and build quality. This guide covers everything from deadbolt types to smart home integration to help you make an informed purchase.
Quick answer
For most homeowners, the August Wi-Fi Smart Lock (4th Gen) offers the best balance of retrofit simplicity, reliable connectivity, and robust security. The Yale Assure Lock 2 is the top pick for a full replacement option with broad smart home support.
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Research updated June 2026.
August Wi-Fi Smart Lock (4th Gen)
Retrofits over existing deadbolt, easy install, reliable Wi-Fi and Z-Wave connectivity.
What is a Keyless Door Lock?
A keyless door lock replaces a traditional keyed deadbolt or knob with an electronic mechanism that unlocks via a keypad, smartphone app, fingerprint sensor, or voice command. These locks improve convenience by eliminating the need for physical keys and allowing remote access control. Most models use standard AA or lithium batteries and retain a physical key override for emergencies.
Keyless Lock Types: Retrofit vs. Full Replacement
Understanding the two main installation categories is critical. Retrofit locks (like the August Wi-Fi Smart Lock) attach to your existing deadbolt on the interior side, leaving your exterior keyed cylinder intact. They are easier to install and allow you to keep your current keys as a backup. Full replacement locks (like the Yale Assure Lock 2) replace the entire deadbolt assembly, including the exterior keypad or touchscreen. These offer a more integrated look but require removing your existing hardware.
Connectivity Options: Wi-Fi, Bluetooth, Z-Wave, and Matter
Connectivity determines how you control the lock. Wi-Fi locks connect directly to your home network, enabling remote access without a separate hub. Bluetooth locks only work within a short range (30-50 feet) unless paired with a bridge. Z-Wave locks require a smart home hub (like Samsung SmartThings or Ring Alarm) but offer excellent reliability and low power consumption. Matter is the new universal standard, promising cross-platform compatibility across Apple HomeKit, Google Home, and Amazon Alexa. For most users, a lock with built-in Wi-Fi or a Z-Wave model with a hub provides the best remote access experience.
Power Source and Battery Life
Nearly all keyless locks run on standard AA or CR123A lithium batteries. Battery life typically ranges from 6 to 12 months depending on usage, connectivity type, and temperature. Wi-Fi locks tend to drain batteries faster than Bluetooth or Z-Wave models due to constant network polling. Look for locks with low-battery alerts (via app or audible beep) and a physical key or 9V battery backup terminal on the exterior. Some premium models offer rechargeable lithium-ion packs, but these add cost and require periodic recharging.
Security Features to Consider
Security starts with the lock's physical construction. Look for ANSI Grade 1 or Grade 2 certification, which indicates resistance to forced entry and tampering. Electronic security includes encryption (AES-128 or higher), auto-lock timers, and tamper alarms that sound if someone tries to pry or hammer the lock. Two-factor authentication and guest access codes with scheduled expiration add another layer of control. Avoid locks that rely solely on Bluetooth without encryption, as they can be vulnerable to relay attacks.
Smart Home Ecosystem Compatibility
Ensure the lock integrates with your existing smart home platform. Apple HomeKit requires a lock with HomeKit support and an Apple TV or HomePod as a hub. Google Home and Amazon Alexa work with most Wi-Fi and Z-Wave locks, enabling voice unlocking and routines. Ring Alarm users should consider Z-Wave locks like the Schlage Encode Plus for seamless integration. If you use multiple platforms, look for a lock that supports Matter for future-proof compatibility.
What to Check Before Buying
Measure your door's backset (2 3/8 or 2 3/4 inches) and crossbore hole diameter (standard 2 1/8 inches). Verify door thickness (1 3/8 to 1 3/4 inches is typical). Check if your door is pre-drilled for a deadbolt or requires new holes. Confirm your Wi-Fi signal strength at the door location; a weak signal may require a mesh network extender. Finally, review your lease if you rent, as some retrofit locks are easier to remove without leaving marks.
Mistakes to Avoid
Do not choose a lock based solely on price; cheap locks often lack encryption and have poor battery life. Avoid Bluetooth-only locks if you need remote access without buying a separate bridge. Never skip the physical key override; electronic failures and dead batteries can lock you out. Do not assume all locks fit all doors; measure carefully. Finally, avoid installing a keyless lock on a door that does not close and latch properly, as misalignment can drain batteries and cause mechanical jams.
Top 5 Keyless Door Locks
August Wi-Fi Smart Lock (4th Gen)
Best OverallPros
- Simple DIY install over existing deadbolt
- Reliable Wi-Fi and Z-Wave dual connectivity
- Works with Alexa, Google, and Apple HomeKit
Cons
- Exterior retains original keyed cylinder
- App can be slow to respond occasionally
The August Wi-Fi Smart Lock (4th Gen) is the standout choice for anyone who wants keyless access without replacing their entire deadbolt. It mounts on the interior side and uses your existing keyed cylinder on the outside, preserving your current keys as a backup. The lock supports both Wi-Fi and Z-Wave, giving you flexible connectivity options for remote access and smart home integration.
Owner reviews consistently praise the straightforward installation process and the robust app that manages guest access and auto-lock schedules. The lock's battery life averages around 8 months with typical use, and the low-battery alerts prevent unexpected lockouts. Some users note occasional delays in app response, but overall reliability is high. It is a solid investment for renters and homeowners alike.
Yale Assure Lock 2
Best Full ReplacementPros
- Sleek, modern design with touchscreen keypad
- Multiple connectivity modules available
- Broad smart home platform support
Cons
- Requires full deadbolt replacement
- Touchscreen can be less responsive in cold weather
The Yale Assure Lock 2 is a premium full replacement lock that combines a sleek touchscreen keypad with modular connectivity. You can choose a Wi-Fi, Bluetooth, or Z-Wave module depending on your smart home ecosystem. The lock supports Apple HomeKit, Google Home, Amazon Alexa, and Samsung SmartThings, making it one of the most compatible options available.
Owner reviews highlight the easy-to-use app and the ability to create up to 250 unique access codes. The lock's build quality feels solid, with a metal construction that resists tampering. Battery life is consistent at around 8-10 months, though the touchscreen may require a firm press in freezing temperatures. It is an excellent choice for homeowners who want a modern look and full control over their lock.
Schlage Encode Plus
Best for Apple HomeKitPros
- Built-in Thread for fast HomeKit response
- ANSI Grade 1 certified security
- Physical keypad with backlit keys
Cons
- Premium price point
- Limited to Apple HomeKit ecosystem
The Schlage Encode Plus is the top choice for Apple HomeKit users, featuring built-in Thread technology for fast and reliable smart home integration. It offers ANSI Grade 1 certification, the highest residential security rating, and a durable metal construction. The lock includes a backlit keypad and a physical key override for emergencies.
Owner reviews commend the lock's fast response times through HomeKit and the easy setup process using the Schlage app. The lock supports up to 100 access codes and includes an auto-lock feature. Battery life is solid at around 10 months, and the low-battery alerts are timely. The main drawback is the higher price and the fact that it is optimized primarily for Apple users, with limited Google and Alexa support.
Ring Smart Lock (2nd Gen)
Best for Ring Alarm UsersPros
- Seamless integration with Ring Alarm
- Easy retrofit installation
- Works with Alexa for voice control
Cons
- Requires Ring Bridge for remote access
- Limited to Ring ecosystem
The Ring Smart Lock (2nd Gen) is designed specifically for Ring Alarm users, offering tight integration with the Ring ecosystem. It is a retrofit lock that mounts over your existing deadbolt, making installation straightforward. The lock uses Z-Wave communication and requires a Ring Bridge or Ring Alarm base station for remote access and smart home features.
Owner reviews highlight the convenience of controlling the lock through the Ring app and setting up routines that arm your alarm system when the door locks. The lock's battery life is slightly shorter than competitors, averaging around 6-8 months, but the app provides clear low-battery warnings. It supports up to 10 unique access codes. The main limitation is that it works best within the Ring ecosystem, with limited compatibility outside of it.
Wyze Lock Bolt
Best BudgetPros
- Very affordable price point
- Built-in Wi-Fi, no hub needed
- Compact design fits most doors
Cons
- Limited smart home integration
- App can be buggy at times
The Wyze Lock Bolt is a budget-friendly full replacement lock that offers excellent value for the price. It includes built-in Wi-Fi, so you do not need a separate hub for remote access. The lock features a compact keypad and a physical key override, and it supports up to 50 unique access codes. The Wyze app provides basic scheduling and auto-lock functionality.
Owner reviews appreciate the low cost and easy installation, though some note that the app occasionally experiences connectivity issues. Battery life is comparable to more expensive models, lasting around 8-10 months. The lock works with Alexa and Google Home for voice control, but it lacks support for Apple HomeKit and Z-Wave. For budget-conscious buyers who want keyless convenience without breaking the bank, the Wyze Lock Bolt is a solid choice.
| Product | Best For | Connectivity | Rating |
|---|---|---|---|
| August Wi-Fi Smart Lock (4th Gen) | Overall | Wi-Fi + Z-Wave | 4.7/5 |
| Yale Assure Lock 2 | Full Replacement | Wi-Fi/Bluetooth/Z-Wave | 4.5/5 |
| Schlage Encode Plus | Apple HomeKit | Wi-Fi + Thread | 4.6/5 |
| Ring Smart Lock (2nd Gen) | Ring Users | Z-Wave | 4.3/5 |
| Wyze Lock Bolt | Budget | Wi-Fi | 4.2/5 |
FAQs
Can keyless door locks be hacked?
Most modern locks use AES-128 encryption and rolling codes, making them difficult to hack remotely, but physical tampering is still possible.
Do keyless locks work without Wi-Fi?
Yes, many locks work via Bluetooth or keypad without Wi-Fi, but remote access requires an internet connection.
How long do batteries last in a keyless lock?
Battery life typically ranges from 6 to 12 months depending on usage, connectivity type, and temperature.
Can I install a keyless lock on any door?
Most locks fit standard doors with a 2 1/8-inch crossbore and 2 3/8 or 2 3/4-inch backset, but always measure first.
What happens if the battery dies?
Most locks have a physical key override or a 9V battery terminal on the exterior for emergency power.
Are keyless locks secure?
Yes, when properly installed and using encryption, they offer security comparable to traditional deadbolts.
Do keyless locks work with smart home systems?
Many locks integrate with Alexa, Google Home, Apple HomeKit, and Z-Wave hubs for voice control and automation.
Can I use a keyless lock if I rent?
Retrofit locks like the August are ideal for renters as they install without replacing the existing deadbolt.
What is the difference between Wi-Fi and Z-Wave?
Wi-Fi connects directly to your router for remote access, while Z-Wave requires a hub but offers better reliability and lower power consumption.
How many access codes can I create?
Most locks support between 10 and 250 unique codes, depending on the model and brand.
Our verdict
For most users, the August Wi-Fi Smart Lock (4th Gen) offers the best combination of easy installation, reliable connectivity, and broad smart home support. If you prefer a full replacement lock with a modern design, the Yale Assure Lock 2 is the top choice. Budget buyers should consider