Item Type: Smart Door Knob Material: Zinc Alloy Colour: Black Battery: 3.7V Rechargeable Lithium Battery 600mah (Built in Battery) Unlocking Method: Password, Fingerprint, APP, Key Recognition Speed: ≤0.5 Seconds Rejection Rate: ≤1% Communication Method: Bluetooth Use APP: For Tuya Smart Lock Tongue Size: Approx. 60mm/2.36in Suitable for Door Thickness: Approx. 25-120mm/0.98-4.72in 1、Unlocking Method: The door lock supports password, fingerprint, APP, key, semiconductor fingerprint design, fast opening speed, high fingerprint recognition accuracy, and one key unlocking. 2、Bluetooth APP Unlock: You can set the lock time with your phone, or you can unlock it at a close distance. Just open the APP to unlock it at close range. 3、Temporary Password: When relatives and friends visit, you can set a temporary password. Guests no longer need to wait outside the door, and the password can be cancelled or withdrawn as needed. 4、Touchscreen Keypad: Lock is made of high quality zinc alloy materials, streamlined design, intuitive LED touch panel, smooth to the touch, moderate size, easy for the elderly and children to control. 5、APP Remote Control: Remote control of your lock, real time notification and access log, allowing you to use for Tuya App anytime and anywhere to understand who is coming and going, safe and convenient. 6、Smart Life: Wireless design, long battery standby for one year, low battery reminder, emergency power supply, don't worry about the door lock running out of power and you will be locked out. 7、Easy to Install: Direct replacement for the traditional cylindrical door knob without additional openning hole, just need a screwdriver, the installation can be completed in a few minutes. 1 x Inside Door Lock 1 x Outside Door Lock 1 x Lock Tongue 2 x Key 2 x Square Rod 4 x Nut Tube 10 x Screw 1 x Spring 1 x Lock Box 1 x Lock Catch 1 x Manual