10 Best Smart Lock Over Existing Deadbolt 2025 in the United States

The Schlage Encode Smart Wi-Fi Deadbolt with Camelot Trim in Matte Black offers a robust solution for those seeking to upgrade their existing deadbolt with a smart lock. Key strengths include built-in Wi-Fi for remote access without additional accessories and compatibility with Alexa for voice control. This makes it easy to lock, unlock, and check the status of your door from anywhere, providing added convenience and security.

The lock also supports up to 100 unique access codes via the Schlage Home or Key by Amazon apps, making it simple to manage access for family and friends. The fingerprint-resistant touchscreen and built-in alarm technology enhance security, along with alerts for potential security breaches and low battery warnings. Installation is straightforward with just a screwdriver thanks to the unique snap ‘n stay technology, making it accessible for most users. The lock's matte black finish and rectangular design offer a sleek, modern look that complements various door designs.

It is important to measure your door's dimensions to ensure compatibility. One potential drawback is the reliance on battery power, which necessitates monitoring and periodic replacement, although the lock does offer alerts and smart reordering through Amazon Dash Replenishment. Additionally, while it integrates well with Amazon Alexa, compatibility with other smart home systems like Google Assistant and Vera is available but may not be as seamless. Users who prioritize a smart lock with versatile access management, easy installation, and solid security features will find the Schlage Encode Smart Wi-Fi Deadbolt to be a reliable and user-friendly choice.

The Schlage Encode Smart WiFi Deadbolt Lock offers a comprehensive solution for modern home security needs. One of its key strengths is its built-in WiFi compatibility, allowing you to control and monitor your lock from anywhere using the Schlage Home app. This makes it highly convenient for managing up to 100 access codes and viewing lock history remotely. The lock's compatibility with Alexa, Google Home, and Apple HomeKit ensures seamless integration with various smart home systems, providing hands-free control options. Additionally, it is designed to work with platforms like Airbnb, making it easier to manage guest access codes.

Security is a top priority with features like encrypted connections, a customizable alarm for door movement and forced entry attempts, and a fingerprint-resistant touchscreen. The lock has also received high ratings for security, durability, and finish from BHMA industry experts. Installation is straightforward, requiring just a screwdriver, and the Snap ‘n Stay design helps keep the lock in place during installation. The lock is battery-operated, using four AA batteries that can last up to six months and includes a low-battery indicator both on the touchscreen and in the app.

The reliance on batteries means you'll need to keep replacements on hand. The physical backup key is a helpful addition in case of electronic failure. While the Schlage Encode Smart WiFi Deadbolt excels in many areas, its primary drawback might be the ongoing need to monitor and replace batteries, which some users could find inconvenient.

The Yale Assure Lock 2 Deadbolt is a smart lock designed for easy installation over existing deadbolts. It offers various ways to unlock the door, including a keypad, voice assistant, auto-unlock, and the Yale Access App, making it versatile for different user preferences. This lock ensures peace of mind with features like Auto-Lock via DoorSense and remote management through the app. However, it's worth noting that this product is only operational within the US and Canada, which could be a limitation for international users.

The security features are robust with two-factor authentication, biometric verification, and a matte keypad to resist fingerprints. Additionally, the lock can be integrated with Apple Home and other smart home systems, making it convenient for users who already have or plan to have a smart home setup. The hands-free voice assistant compatibility with Amazon Alexa, Hey Google, and Siri further enhances convenience. Sharing access is straightforward through the Yale Access App, allowing you to provide unique codes to family and friends and track entry and exit times.

Installation is user-friendly, requiring just a screwdriver and no professional help. One potential drawback is the reliance on battery power, which means you’ll need to monitor and replace batteries periodically. This lock is durable, made from zinc, and fits most standard US entry doors. The Yale Assure Lock 2 Deadbolt is an excellent choice for users looking for a secure, versatile, and easy-to-install smart lock that integrates well with existing smart home systems.