Features 1、3 in 1 Smart Lock: Fingerprint recognition, password and mechanical key 3 unlocking methods. Support garbled unlocking to prevent peeping, suitable for door thickness 30‑65mm. 2、Fast Fingerprint Recognition: Built in latest fingerprint recognition module, fingerprint recognition within 1.5S, up to 100 fingerprints can be stored. (Only recognize living fingerprints, reject fake fingerprint films.) 3、Low Voltage Alarm: Low power consumption function, when the voltage is lower than 4.8V, the low voltage prompt will remind you to replace the battery. 4、Emergency Power: If the battery of our smart door lock is low, you can temporarily charge your security lock with a power bank, phone charger, any power source with a Micro USB port. 5、Easy to Use: Make your life safer and more convenient, support up to 100 fingerprints and 100 sets of passwords. Can identify dry and wet fingerprints, suitable for children and the elderly. Specification Item Type: Smart Door Lock Material: Zinc Alloy Colour: Black Battery Type: 4 AAA batteries required (not included) Unlocking Method: Fingerprint, password, mechanical key Unlock Time: 1.5s Number Of Fingerprints: 100 Number Of Passwords: 100 groups Scope Of Application: Ideal for home, office, hotel, apartment, etc. Package List 1 x Front Handle 1 x Rear Handle 1 x Lock Tongue 1 x D Pinch Plate 1 x Buckle Cover 2 x Key 1 x Square Strip 2 x Headless Screw 2 x Connecting Tube 2 x Front and Rear Panel Lock Screws 4 x Self Tapping Screw 1 x Battery Cover Replacement Screw 1 x Screwdriver 1 x Manual