Unlock mode(4 in 1 Lock): Fingerprint / Password / Mechanical Key ( 2pcs ) / Tuya APP (Bluetooth) Fingerprint Capacity: 50 Fingerprint reader: semiconductor sensor Read time: 0.3S Working power: 4x AAA Alkaline battery ( Not included batteries ) Suit for the door thickness about 35-55mm With USB charge port for emergency Note: The package does not come with batteries, which need to be purchased separately. Note: App connection is only possible via Bluetooth, if you want to connect via WIFI you need to buy a Bluetooth gateway. Password unlocking is easier Features 100M+ password combinations with 6-8 digit length. Secure, keyless entry via touchpad. , weatherproof design. Easy installation, compatible with most doors. Anti-peep & anti-tamper tech. Features a silent mode with smart noise reduction for quiet operation. Enjoy a peaceful home without disruptive sounds. Enhances comfort with advanced silent technology. Smart Door Handle Lock - Offers four convenient unlocking methods: fast & secure fingerprint recognition, customizable 6-8-digit PIN codes, traditional mechanical key backup, and remote access via mobile app. Combines advanced security with smart home integration, ensuring keyless convenience and peace of mind. , easy to install, and compatible with most doors. Color: Black Material: ABS+Metal Package Contents: 1 set * fingerprint password 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.