The DB2-B-GL is a tough motorized deadbolt and comes in black, chrome, and gold. The DB2-B-GL is also a keyed-entry lock. With Bluetooth connectivity Alfred unlocks with a single-touch when your phone is nearby. Control Alfred remotely with the Alfred App. who enters, and when. Program 20 unique, single use, or timed pin codes. Powered by 4, AA batteries. Never be locked out with an emergency micro USB power port. Emergency power port enables you to plug the smart lock to a micro USB power source if the battery is low. Intertek 20-minute fire-rating ensures safety and reliability. Suited for short-term rental applications, this smart lock allows you to create pin codes for different users, create one-time pin codes, and create time-sensitive pin codes.