The Dalton D03 pairs smart security with a rich copper finish that adds a modern, elegant touch to homes and offices, backed by a tough aluminum alloy body with internal shielding. Choose how you enter: fingerprint, PIN code, key fob, mobile app, or mechanical key. Built-in WiFi lets you monitor entry activity in real time and let visitors in from the app when they ring the doorbell. When a babysitter, delivery driver, or service worker needs to get in, you can create a one-time PIN or temporary password in the app. The D03 locks itself moments after the door closes and stays locked during power outages or battery failure. It fits doors 1.378" to 1.969" (35 to 50 mm) thick with a 1.969" (50 mm) backset.