Feature:1. Using fingerprint technology. Highly sensitive semiconductor fingerprint recognition, it only takes 0.25s to open the door with fingerprint, which is safe and secure.2. High capacity. The smart lock can store 30 fingerprints and is easy and convenient to open.3. Turn the complex into simple, regardless of direction. Swap left and right. The doorknob opens in both directions to follow your heart.4. Normally open mode, can be set to open the door lock directly without verification. Press and hold the normally open button for 1 second, let go after the front panel lights up, you can turn on the normally open mode and repeat the operation or close it after verifying the fingerprint.5. Power supply. Use 4 AAA batteries (not included). Built-in USB port can be used in emergency situations.6. Emergency key. Comes with 2 keys for standby applications, allowing you to open the door in a traditional way.7. Can cover the spherical keyhole. The lock panel is 65mm, and the spherical lock is 45mm, which can be completely covered.8. Wiring-free structure, simple installation. Applicable to 99% bedroom|office door wooden door special fingerprint lock9. Widely used. Made of zinc alloy, strong and durable, suitable for families, apartments, personal residences, hotels, etc.Specification:Type: Fingerprint door lockMaterial: Zinc AlloyProduct color: Silver, Black (optional)Function: fingerprint unlock, key unlock, normally open modeInterface: USBBattery: 4*AAA dry battery (not included)Working temperature: -20-55 degrees CelsiusRecognition time: 0.25sFingerprint capacity: 30Fingerprint type: semiconductor fingerprintAdjustable center distance: up to 70 mm/2.75 inch Product size: 144*65*28mmWeight: 560gNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the