Features: 4 in 1 Unlock Method: Smart door lock with 4 in 1 unlock method, you can easily choose between fingerprint, passcode, key, or APP control to access your home or room. The fingerprint technology ensures that only authorized individuals can enter your space for added convenience and security. Tuya APP Control: You can set 100 fingerprints on the Tuya APP, which can be shared with family and friends, and you can also view the unlocking and locking records in real time on the APP. You don't have to worry about unlocking and locking even when you're away. Durable Zinc Alloy Material: Crafted from high quality and durable zinc alloy material and powered by 4 X AAA batteries (not included), this door lock is built to last, withstand the elements and resist tampering. DIY Installation: No wiring required, the installation process is straightforward and simple, making passcode door lock easy for anyone to install the lock themselves. Wide Application: The size of fingerprint door handle is 145 x 65 x 25mm, and perfect for a variety of applications, including front doors, bedrooms, apartments, hotels, and etc. Specification: Product material: Zinc Alloy Product color: Black Product size: 167 x 65 x 27mm / 6.57 x 2.55 x 1.06in Spring blot size: 60/70mm - 2.36/2.75in (adjustable) Suitable door thickness: 38-50mm / 1.49-1.96in Unlock method: Tuya App, fingerprints (100 groups), passwords (50 groups), mechanical keys (2pcs) Power supply method: 4 X AAA alkaline batteries (not included) Battery life: 1 year of normal standby Password length: 4-10 digits Static power consumption: 30uA Working power consumption: 200mA Working temperature: -20 - 70C Working humidity: 20%-80%RH Note: The 4 X AAA alkaline batteries are not included. Packing List: 1set x Smart Door Locks 2 x Mechanical Keys 1set X Tools