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Smart locks offer convenient ways to secure a home, but questions about dead batteries, internet outages and digital security are understandable. If you rely on a phone to unlock your front door, losing connectivity can feel like losing access to your home. The good news is that many smart locks retain local entry options when Wi-Fi fails. Battery failure is a separate issue, and the available backup methods depend on the lock you choose.Before upgrading your door hardware, understand how smart locks respond to common failures and how they fit into a broader home security plan.Need help evaluating your home’s entry points? Request a free quote and inspection from ADT to discuss security options for your home.
Are Smart Locks Safe for Your Home?
Smart locks are generally a reasonable home security option when properly installed, maintained and configured. Their security depends on the lock’s physical construction, its access controls and the way you manage connected devices. A smart lock with reliable backup access and strong account security offers more flexibility than one that depends entirely on a phone or internet connection.
Electronic access does introduce risks that traditional deadbolts do not have, including depleted batteries and software vulnerabilities. However, these risks are manageable with the right precautions.
The Federal Trade Commission (FTC) recommends changing default usernames and passwords on connected devices and enabling two-factor authentication when available. Keep your phone and smart home equipment updated, too, and use a unique password for your security account.
What Happens if Your Smart Lock Battery Dies?
If a smart lock’s batteries run out, its electronic functions may stop working. Depending on the model, that could mean losing keypad entry, fingerprint recognition or electronic locking and unlocking until you restore power. A keyed model may still allow entry with its physical key.
The exact outcome depends on the hardware. Check the manufacturer’s instructions before installation so you know how to regain access if the batteries fail completely.
How To Avoid a Lockout
Take these steps to reduce the chance of getting stuck outside:
Watch for low-battery warnings. Some locks display an alert on the keypad or report battery status through a connected app. Replace batteries promptly. Follow the manufacturer’s instructions and use the recommended battery type. Learn the emergency procedure. Some models support temporary external power, while keyed models offer a physical backup. Never assume your lock has either feature without checking. Test access methods. Confirm that your usual entry method works and that everyone in the household understands the backup procedure.ADT’s Yale Assure Lock 2 uses four AA alkaline batteries. ADT’s support guidance instructs users to replace all four batteries with new AA alkaline batteries when the lock reports a low-battery warning. Its Yale Assure Lock 2 Touch also provides battery-status information through the ADT+ app and uses keypad indicators to warn when battery replacement is needed.
These features make routine maintenance easier, but they do not eliminate the need to respond to warnings.Related: Just Moved Into a New Home? 10 Security Steps To Take Before You Unpack
Will a Smart Lock Work if Wi-Fi Goes Out?
A Wi-Fi outage does not automatically disable a smart lock’s local entry functions. Many models store access credentials on the lock itself, allowing users to enter a programmed code or use another supported method without an active internet connection. However, remote app access and notifications may be interrupted until connectivity returns.
The distinction is between operating the lock at the door and controlling it remotely. Your phone may be unable to send a command over the internet even while the lock’s keypad continues to work.
What Still Works During an Internet Outage?
What to expect
Often works if the code is stored locally and the lock has power
May work locally on supported models with power
Works on keyed models, provided the key and lock are functional
May be unavailable without the required network connection
May be delayed or unavailable during connectivity problems
Depend on the lock, hub, network and system configuration
These are general expectations, not guarantees for every smart lock. Review the documentation for your specific model and test its local entry options before relying on them.
ADT’s Yale Assure Lock 2 is battery-powered, and ADT confirms that the lock can function during a household power outage. Its local entry code provides an additional access method beyond the ADT+ app. Remote control, however, depends on the required system and network connections.
What if Both the Battery and Wi-Fi Fail?
A lock with depleted batteries and no working electronic backup can leave you unable to use its keypad or biometric reader. If the model has a physical key, that may provide an alternative. If it does not, restoring power according to the manufacturer’s instructions may be necessary.
This is why backup access deserves attention before you buy. A lock that offers several entry methods gives you more options when one method fails, but those methods do not all protect against the same problem.
Concerned about relying on a single entry point? ADT can help you assess your home’s existing door hardware and broader security needs. Request a free quote and inspection to explore available options.
How Can You Make a Smart Lock More Secure?
A smart lock works best when its physical installation and digital settings are both secure. Before choosing one, consider the following steps.
Protect Your Account and Connected Devices
Use a unique, strong password for the account controlling your lock. Enable two-factor authentication if the service offers it. Install firmware and app updates when available. Remove access codes and accounts that are no longer needed. Give temporary visitors only the access they require, and revoke it afterward.These steps follow the FTC’s guidance for protecting internet-connected devices. They also reduce the chance that an old access code or compromised account will provide unnecessary access to your home.
Check the Door Itself
A smart lock cannot compensate for a damaged door, a weak frame or an improperly installed deadbolt. Check that the door closes securely and that the bolt extends fully into the strike plate. If the hardware binds or the door shifts seasonally, address the alignment problem rather than forcing the lock to operate.Related: The Best Home Security Systems for Multi-Story Homes: Coverage Without Dead Zones
Choose a Lock With Practical Backup Options
Think about how your household actually enters the home. A keypad may suit families who prefer codes, while fingerprint access can reduce the need to remember one. App control offers remote convenience, but you should know which features require internet access and which operate locally.
Compare the backup methods, battery warnings and installation requirements before making a decision. Also confirm that the lock is compatible with your door and the home security system you plan to use.
Are Smart Locks Worth It?
Smart locks can provide convenient entry, individualized access codes and remote control without requiring you to carry a traditional key. Their reliability depends on battery maintenance, the available backup methods and whether you understand which features require connectivity.
If you’re considering a smart lock as part of a broader home security upgrade, ADT can help you review compatible equipment and identify potential gaps in your current setup. Request a free quote and inspection from ADT to discuss options for securing your home’s entry points.
Some or all of this content may have been generated by AI. While we strive for accuracy, AI can occasionally produce incorrect information. If you buy something via one of our links, we may earn a commission.
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