Experience ultra-fast, convenient keyless door unlocking and seamless smart home integration to your new and existing automation devices with eufy Smart Lock E31. Stop fumbling for keys when your hands are full and unlock your front or back door in less than 0.3 seconds using just your fingerprint. The lock’s intelligence improves fingerprint recognition with each use, ensuring quick access for your family. Enjoy multiple door unlocking options: eufy App, built-in keypad, included physical key, or voice commands via Siri, Alexa or Google Assistant. Seamlessly link eufy’s Matter-supported smart lock to your current smart home ecosystem using your existing home automation hub. It features compatibility with all major smart home ecosystems, including Apple Home, Google Home, Alexa, and SmartThings for easy, hands-free management of your Smart Lock and more. It pairs with Apple HomePod or other smart devices to experience simple setup, guest access management, real-time notifications, event logs, and remote unlocking.
Q: How long is the manufacturer's warranty?
A: The manufacturer's warranty for parts and labor is 18 months.
Q: What is the maximum operating temperature?
A: The maximum operating temperature is 158 degrees Fahrenheit.
Q: Can the smart lock be unlocked using voice commands?
A: You can unlock the deadbolt using voice commands via Siri, Alexa, or Google Assistant.
Q: How many keypad codes can the smart lock store?
A: The smart lock can store 100 keypad codes.
Q: Is the smart lock compatible with other smart home ecosystems?
A: The eufy Smart Lock E31 is compatible with all major smart home ecosystems.
A: Yes, with the Eufy Smart Lock series, it is possible to replace or rekey the cylinder without needing to buy a new lock. Since this lock is equipped with a physical keyhole (usually located under the keypad and accessible by rotating the cylinder cover), you can work with a professional locksmith to either rekey the cylinder or replace it entirely.
A: Yes, the eufy Smart Lock includes a feature that sends low-battery notifications through the app, ensuring you are alerted when the battery needs to be replaced. Additionally, with WiFi connectivity, you can unlock the door remotely via the eufy app, even when you are not at home. This is especially convenient for granting access from anywhere without requiring physical presence.
Q: Where can I get an extra battery for this?
A: The Smart Lock E31 WiFi Replacement Deadbolt uses 4 AA batteries, which are included but are non-rechargeable. If you wish to get additional batteries, you can purchase standard AA batteries at most retail or online stores. Make sure to replace the batteries with compatible AA types for maintaining the lock's functionality. If your goal is to use an alternate or rechargeable power source in emergency situations, you can charge the smart lock using a micro USB cable and a power bank via the USB port located at the bottom of the smart lock.

Experience ultra-fast, convenient keyless door unlocking and seamless smart home integration to your new and existing automation devices with eufy Smart Lock E31. Stop fumbling for keys when your hands are full and unlock your front or back door in less than 0.3 seconds using just your fingerprint. The lock’s intelligence improves fingerprint recognition with each use, ensuring quick access for your family. Enjoy multiple door unlocking options: eufy App, built-in keypad, included physical key, or voice commands via Siri, Alexa or Google Assistant. Seamlessly link eufy’s Matter-supported smart lock to your current smart home ecosystem using your existing home automation hub. It features compatibility with all major smart home ecosystems, including Apple Home, Google Home, Alexa, and SmartThings for easy, hands-free management of your Smart Lock and more. It pairs with Apple HomePod or other smart devices to experience simple setup, guest access management, real-time notifications, event logs, and remote unlocking.

Take front door protection to the next level with eufy's FamiLock S3 Max, allowing you to effortlessly and securely unlock your door with just a wave of the hand. The 3-in-1 smart lock features a 2K HD camera, video doorbell, and smart lock developed to meet your family's evolving access needs. With accurate, forgery-proof palm vein technology, FamiLock S3 Max recognizes the unique vein pattern on your hand's palm in just 0.1 seconds with up to 99.99999% accuracy. Ideal for the whole household, including kids and older relatives, each person's palm vein data is stored locally on-device, making it only accessible to you. The integrated color video screen on the inner lock provides a seamless, app-free alternative for monitoring who or what is at the front door. Providing peace of mind when older parents or kids arrive home, eufy FamiLock S3 Max keeps you connected and reassured. Gain sharp, clear views from the built-in 2K HD camera and f/1.6 lens that provides detailed footage even in twilight or sunset hours. Goodbye blind spots with the camera's 150° head-to-toe, wide-angle coverage. Innovative PowerDuo technology offers powerful charging options and superior flexibility. Enjoy up to 6 months of power with the 15,000mAH rechargeable battery; and an emergency set of four AAA batteries provide an extra month of charge in case of emergency power outages. Enjoy a robust, customized smart home ecosystem by adding HomeBase 3 for advanced AI features and enhanced security. The eufy app provides remote control and access from anywhere and sends real-time alerts when packages are delivered, or guests stop by. Matter compatibility provides easy, secure connection with Apple Home, Google Home, Alexa, and SmartThings.

Unlock convenience and security with Tapo DL110. Its lightning-fast fingerprint sensor unlocks your door in under 1 second, and the ultra-long battery life keeps it powered for up to 1 year. Access in six different ways: by fingerprint recognition, using custom passcodes on the keypad, manage from anywhere with Wi-Fi, via close-range Bluetooth, your smart home assistant, or by using the included backup keys. Manage residents and guests with ease by creating custom permanent, one-time or scheduled passcodes. Pair with your Amazon Alexa, Google Home or Samsung SmartThings for hands-free voice operation and mangement. Security features such as auto-lock, real-time alerts for suspicious activity, and a detailed activity log give you ultimate peace of mind. Finally, the Tapo DL110 boasts a hassle-free installation with all necessary tools included so that you can take control of your front door security in no time.

YALE ASSURE LOCK 2 TOUCH. A LOCK AS UNIQUE AS YOU. Make coming home more seamless than ever with the Yale Assure Lock 2 Touch. Thanks to the new biometric keypad, a simple touch of your finger is all it takes. Explore multiple ways to access your home including your fingerprint, entry code on the keypad, hands-free Auto-Unlock, or using the app on your phone (at the door only). For added peace of mind, never worry about locking the door behind you with advanced Auto-Lock and DoorSense. The Yale Assure Lock 2 Touch can be upgraded with a Wi-Fi Smart Module whenever you’re ready, so unlike other smart locks, you won’t have to buy a new one if your smart home needs change.
| Pros for Smart Lock E31 WiFi Replacement Deadbolt Unlock with eufy App, Keypad, Smart Devices, and Fingerprint - Black | |||
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| Cons for Smart Lock E31 WiFi Replacement Deadbolt Unlock with eufy App, Keypad, Smart Devices, and Fingerprint - Black | |||
| There were no cons for this product— | There were no cons for this product— | There were no cons for this product— |
Customers are delighted by the Smart Lock E31's ease of use and installation, praising its straightforward setup and quick installation time. The fingerprint sensor is another highly appreciated feature, with users consistently highlighting its speed and reliability. Positive feedback also emphasizes the overall performance and long battery life of the smart lock. Many appreciate the sleek design, enhancing the aesthetic appeal of their homes.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Upgraded to this lock from an August Smart lock. I am really enjoying the convenience of the fingerprint sensor. It claims an 18-month battery life, so we'll see how that goes, but the battery is rechargeable, so there is no real additional cost there. Beats the expensive CR123 cells the august used to burn through every couple of months. The only thing i would like to see in a future model is a more standard key way that can be Rekeyed to match the old deadbolt. With this lock, you have to use the keys that Eufy provides, which is a little thicker and can't be used in my other deadbolts. Overall, I would highly recommend this lock because it works great with both out goofle home and apple homekit set up.
Posted by CB94
Works as intended. Love that it is rechargeable. You can manage access and give everyone a different pin or set a temporary one. You can set notifications when it unlocks or locks.
Posted by Audrey
The Effy deadbolt is a great convenance! It gives me the ability to program different codes for different people I want to have access to my house. It also lets me lock and unlock the door remotely. Don't forget to charge the battery!
Posted by MelanieM
