Fingerprint Unlocking <0.3 s fast recognition1 million wear-resistant≤0.01s anti-authenticity Password Unlocking virtual password designed, you can add multiple wrong passwords before/after entering the correct password, and then press # to confirm the lock IC Card Unlocking card type: 13.56MHz, IC cardsuitable for the elderly and children Mechanical Keys Unlocking use the mechanical key as a backup, in case the battery has run out ofmore safe Low Battery Real-time Reminder When the battery level is less than 10%, the system will automatically voice reminders using the MICRO-USB interface, and the power bank can be connected to provide emergency power supply. Support For Tuya Function The biometric fingerprint lock can be connected to the mobile phone via WiFi, which can realize remote unlocking. You can view the unlocking record through the APP, and understand the use of the door lock in time. The door lock module is waterproof, moisture‑proof and mildew‑proof. After high and low temperature tests, it is resistant to vibration and aging, and adapts to harsh environments. EBTOOLS lock can be used for wooden doors, big iron doors, courtyard doors, warehouse doors, etc. Suitable for doors with thickness of 3.5-5.5cm/1.38-2.17in. Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Specifications: Item Type: Smart Door Lock Material: Zinc Alloy Unlocking Method: Fingerprint, IC Card, Password, Mechanical Key, Mobile APP Power Supply: 4.5V-6V, 4 x AAA dry batteries (not included) Number Of Fingerprints: 100 Password: 100 Groups Card: 100 Cards Card Type: 13.56MHz, IC Card Password Length: 6-8 Digits Virtual Password: 16 Digits Unlocking Time: ≤1S Emergency Power Supply: 5VDC Product Only Supports: Tuya APP (Alexa not compatible) Suitable For Door Thickness: 3.5-5.5cm/1.38-2.17in Package List: 1 x Front Lock Plate, 1 x Rear Lock Plate, 1 x Double Bolts Lock Skeleton, 1 x Lock Box, 1 x Lock Buckle, 1 x Screw Pack, 1 x Opening Diagram, 1 x Manual, 2 x Mechanical Keys, 2 x Access Cards, 1 Pack of Installation Accessories