K01 Smart Fingerprint Lock Aluminum Alloy Biometric Lock Door Knob Home Security - Brushed Nickel •Smart Tuya/smartlife Lock offers 3 unlock options,fingerprint unlock,app unlock and key unlock. The fast 3D fingerprint sensor stores up to 20 different fingerprints and unlocks in just 1 second,giving you and your family easy access •The Bluetooth smart lock adds modern technology to your home while maintaiing its aesthetics,with Bluetooth,you can manage all users,fingerprints and set the car lock and view the access record,keeps your home safe. Can connect with a Bluetooth gateway for remote control. (Bluetooth gateway not included) •The fingerprint door lock looks like a standard door knob,its minimal design suits your style and most doors with thickness within 35-55mm. Convenient installation with a long and thin screwdriver,no need for extra drill and locksmith rental. •Power supply by 4 AAA batteries (not include) with long battery life and low battery remind,equipped with USB port and type C USB for emergency charges Specification: •Main material: aluminum alloy •Number of keys: 2 •Working temperature: -25 Celsius Degree to 70 Celsius Degree •Lock body model: single bolt •Working power supply: 4 x AAA batteries (not included) •Applicable door thickness: 35-55mm •Applicable door categories: wooden doors/steel doors •Fingerprint capacity: 20 pieces •Working voltage: 6V •Emergency power supply: Type-C/5V 2A •Verification time: ≤1S •Support: Internet of Things Package included: •1 x Fingerprint Lock •2 x Keys •1 x Installation Pack •1 x English User Manual