10 Best Smart Lock Over Existing Deadbolt 2026 in the United States

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 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 Philips Smart Lock with Handles is a robust solution for those looking to add smart functionality to their existing front door deadbolt. A key advantage is its versatility in unlocking methods, which include fingerprints, PIN codes, a physical key, and a smartphone app via Bluetooth. This makes it convenient for various users, particularly those who prefer keyless entry. Additionally, it integrates with Amazon Alexa and Google Assistant for voice control, though it requires a separate Philips Wi-Fi gateway, which is an extra purchase.

The fingerprint recognition feature is particularly user-friendly and can store up to 50 fingerprints, making it ideal for larger households. The PIN code options are extensive, allowing for both one-time and up to 100 user PINs, which can be managed with the app if paired with the Philips Wi-Fi gateway. The auto-lock function is a significant security benefit, ensuring your door locks itself when closed, providing peace of mind.

However, the installation process, while advertised as simple, might require drilling if you need extra security or if your door is warped, which could be troublesome for some users. The lock is powered by alkaline batteries, which are included, but you will need to keep replacements on hand. Its compatibility with most standard doors is another plus, though it's always good to double-check your door's specifications before purchasing. This smart lock is highly functional and secure, making it a great choice for smart home enthusiasts, but be prepared for potential additional costs and a slight learning curve during installation.