Features: Keyless Entry & Traditional Keys: Smart lock offers keyless entry options by passwords which can program 10 user codes for your family members and friends, also support entry with traditional keys. Keypad Door Lock with Handle: Deadbolt lock with 2 lever handles is perfect for wooden door, steel door, etc. It is the ultimate security solution for your front door, apartment, home, or hotel room. Security and Durability: Door lock is powered by 4 X AA batteries (not included), eliminating the need for wiring or electrical work, ensuring that it will continue to function even in the event of a power outage. Maximum Convenience: Smart door lock is designed to suit for doors of thickness between 38mm-48mm, and uses technology to provide enhanced security and convenience for homeowners. Easy Installation: The keyless door lock's easy-to-follow instructions and included hardware make installation a breeze, so you can enjoy the benefits of a high-tech lock in no time. Specification: Product material: Zinc Alloy + ABS Plastic Product color: Black Product size: Front panel: 137 x 60 x 25mm / 5.39 x 2.36 x 0.98in Back panel: 155 x 65mm / 6.1 x 2.55in Password length: 6-8 digits Spring blot size: 60/70mm - 2.36/2.75in adjustable mortise Suitable door thickness: 38-48mm / 1.49-1.88in Unlock method: Password control (10 user codes), mechanical key control (2pcs) Static power consumption: 30uA Working power consumption: 200mA Working temperature: -20 - 70C Working humidity: 20%-80%RH Power supply method: 4 X AA alkaline batteries (not included) Battery life: 1 year of normal standby Note: The 4 X AA alkaline batteries are not included. Packing List: 1 x Keypad Assembly 1 x Interior Assembly 1 x Exterior Lever 1 x Interior Lever 2 x Mechanical Keys 1set X Tools