Built-in WiFi allows you to lock/unlock from anywhere, plus set up guest access codes for recurring, temporary or permanent access when paired with the Schlage Home app or Key by Amazon app, no additional accessories required For additional convenience, enjoy voice commands via Alexa or Google Assistant Create and manage up to 100 access codes for trusted friends and family to use with the fingerprint-resistant, capacitive touchscreen with easy one-touch locking Built-in alarm technology senses potential security breaches at the lock Low battery indicator offers weeks of advanced warning for battery replacement Easy to install with just a screwdriver.