Lock and unlock your home without the hassle of keys - enter your 4-8 digit entry code on the touchscreen keypad, use the Apple Home app or simply ask Siri! You'll never need to share a key again, simply create unique entry codes for friends and family and manage them within the Yale Secure app. The lock fits standard doors 1-3/4" to 2-1/4" thick with face bore holes of 2-1/8" and can be installed with just a screwdriver. Environmental - -22F to 140F.