Eufy Security Smart Lock Touch has comprehensive safety solutions for your home. Fingerprint Identification: Smart Lock recognizes your fingerprint in just 0.3 seconds and unlocks your door in 1 second. It’s faster than fumbling for your keys. 4 Ways to Unlock: Open in an instant using your fingerprint, unlock via the eufy Security app with Bluetooth or by using either the electronic keypad or the key. Automatic Locking: A built-in sensor detects when your door is closed and locks it automatically, keeping your home secure even when you’re in a hurry. All-Weather Protection: With an IP65 weatherproof rating, Smart Lock is ready to protect homes in any location. It’s capable of withstanding temperatures ranging from -30 degree C/-22 degree F to 70 degree C/158 degree F as well as rainfall. Protecting Your Privacy:Stores your fingerprint and in-app data locally—rather than on the cloud—to keep your personal information safe and private. Easy to Install: You can install Smart Lock Touch in just 15 minutes, all by yourself and using only a screwdriver—saving you money on calling a contractor. BHMA Grade 2 Security Certification:Proven to work after locking and unlocking 250,000 times. Certified by the American National Standards Institute. Emergency Unlocking:Use a portable charger to unlock your Smart Lock when it is out of battery power. The AA batteries last around 12 months before needing to be replaced.