The Best Smart Lock For Existing Deadbolt: Buyer's Guide in 2025

What smart locks go over existing deadbolts?

There are retrofit smart locks available that are designed to go over existing deadbolts without requiring extensive modifications to the door. These retrofit smart locks are installed on the interior side of the door and typically have a mechanism that interacts with the existing deadbolt, allowing keyless entry and smart functionalities. Some examples of retrofit smart locks include the August Smart Lock, the Danalock V3, and the Yale Assure Lock SL with Connected by August.

Are smart locks compatible with all doors?

Smart lock compatibility can vary depending on the specific lock and door configuration. Most smart locks are designed to be compatible with standard door types, such as single-cylinder deadbolts or latch-style locks. However, it's important to check the compatibility requirements and specifications provided by the smart lock manufacturer to ensure that the lock can be properly installed and used with your specific door. Some smart locks may require additional hardware or modifications to ensure compatibility with certain door types.

Which smart locks can be rekeyed?

Not all smart locks have the ability to be rekeyed. Rekeying refers to the process of changing the lock's internal pins or tumblers to match a new set of keys, thereby invalidating the old keys. Some smart locks, such as those offered by Schlage, have options that allow for rekeying. For example, Schlage Connect and Schlage Encode smart locks are compatible with the Schlage rekeying kit, which enables homeowners to rekey the lock themselves without the need to hire a locksmith. It's important to check the specifications or consult with the smart lock manufacturer to determine if a particular model supports rekeying.

Is a smart lock safer than a deadbolt?

Smart locks, when properly installed, used, and maintained, can provide a high level of security similar to traditional deadbolts. Smart locks often offer additional security features such as activity monitoring, access logs, temporary access codes, and remote control capabilities. However, the security of a smart lock relies on factors such as the manufacturer's security measures, user implementation of best practices, and the quality of the lock itself. Traditional deadbolts are mechanical and not vulnerable to cyberattacks or connectivity issues. Some people prefer the simplicity and proven reliability of traditional deadbolts. Ultimately, the choice between a smart lock and a deadbolt depends on individual preferences, security needs, and comfort level with technology.

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