Pair with a Z Wave smart home or security system like Samsung SmartThings or Ring Alarm to lock and unlock from anywhere. Hands-free voice control requires the Z Wave smart home system and compatible voice assistant. Alexa device is sold separately. Easy to install with just a screwdriver. Unique Snap n Stay technology snaps the deadbolt onto the door so both hands are free during installation. Use the fingerprint-resistant touchscreen to share up to 30 access codes instead of keeping track of spare keys. Keying: 5-pin tumbler, C Keyway, 1 key is included. The built-in alarm senses potential door attacks.