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 eufys 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. Faceplate: 0.98 In. W. x 2.2 In. H. x 0.13 In. D. 1.05 In. projection. 1-3/8 In. to 2 In. required door thickness. Strike plate 1.1 In. W. x 2.73 In. H. SC1 keyway, ANSI Grade 3. Battery operated.