The direction reversible handle design allows for easy installation and use, adapting to both left and right-handed doors Constructed with zinc alloy, this lock offers robust protection against wear and tear Say goodbye to traditional keys with waterproof Tuya face recognition technology, ensuring secure entry at all times Monitor and manage your lock effortlessly through the app, while enjoying the of built-in rechargeable battery. Specification: Material: Metal Unlock modes: Face Recognition/ Fingerprint /Password /IC Card / APP / Mechanical Key Supported app name: Tuya app, Smart life app Fingerprint recognition time: 0.25S Fingerprint Users: 100pcs Card Users: 100pcs Password Users: 100pcs Power supply: 2500mAh Li-battery(include) or External 12V DC power adapter(not include) Operating temperature: -25 to 55 Centigrade Suitable door thickness: 20-80mm( Wooden door, Steel door, Iron door, other metal doors) (The product appearance and printed words depending on the batch, but this does not affect use) Color: As Shown Package Contents: 1 set of locks Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.