This passcode deadbolt lock allows easy keyless entry to your home for you and your guests. Powered through the Nest app, you're given complete control over who's coming and going with remote lock-and-unlock access, alert notifications and auto-lock features no matter how far you are from home base. You can also see a history of who unlocked the door and when. 2" x 7" x 2 3/4". 4 lb. Fits standard doors 1 3/8"-2 1/4" thick. Requires four AA batteries (included). Requires a compatible phone or tablet with the free Nest app and Bluetooth 4.0. Remote access using the Nest app requires creation of a Nest Account. Compatible with Nest Secure System, sold separately. Secure and tamper-proof key free, connected deadbolt lock. Create up to 20 unique pass-codes for family and friends. Remote control from the Nest app. Operated from outside by electronic keypad, Inside by thumb turn. Imported