Secure Keyless Entry, Entry via Fingerprint, Password, Wi-Fi, Entry via Bluetooth, Physical Key, Lasts for 250,000 Unlocks, Rechargeable 10,000mAh Battery, eufy Security App for iOS & Android, Use with Amazon Alexa & Google Assistant, IP65 Rated for Outdoor Use. Implement keyless entry for your home rental property or business with the S231 Smart Lock from eufy Security. Featuring multiple ways of unlocking this lock grants access via fingerprint password Wi-Fi Bluetooth voice assistant or a physical key. Tested to last for 250 000 unlocks this lock will be functional for over 30 years.Remote unlocking and management from anywhere is possible via the eufy Security app for iOS and Android. Compatibility with Amazon Alexa and Google Assistant enables seamless voice commands. This lock is housed in an IP65-rated enclosure for safe outdoor use.