Feature: 1. THREE MODES OF UNLOCKING: The fingerprint lock supports three modes of unlocking: fingerprint, password and mechanical key, which you can set according to your needs. 2. ACCURATE RECOGNITION: Fingerprint lock adopts advanced biometric fingerprint technology with 508DPI resolution, fingerprint recognition rate is up to 98%. 50 sets of fingerprints can be added to eliminate the trouble of forgetting keys when going out. 3. HIGHLY EFFICIENT: Smart fingerprint lock opens the door in just 1 second, and you can even set a freepass mode and keep it unlocked at all times, making it easy for kids and the elderly to use. 4. LOW BATTERY ALERT: The smart lock requires 4 AAA batteries (not included), which can last up to 8 to 10 months depending on the frequency of use. Low battery reminder function (red lamp blinks three times when unlocked). 5. EMERGENCY CHARGING: Equipped with USB port for emergency charging. (Note: This interface is only for emergency charging, the battery can not be charged, you need to replace the battery in time.) Specification: Item Type: Fingerprint LockMaterial: Aluminum alloy + ABSEmergency Power Port Type: type C USB Emergency Power Supply: DC 5V Fingerprint Capacity: 50 pieces Password Capacity: 100 sets Password Length: 6 to 10 bits False Password Length: ≤16 bits APP Name: For Smart Life Low Power Alarm Voltage: 4.8V±0.2V Operating Voltage: 6V/ 4x1.5VAAA dry battery (not included) Standby Current: <50uA Working Current: ＞250ma Number of Administrators: 3 (01-03) Operating Temperature: -25℃ to 70℃Note: Initial password: 123456 Initial state of the administrator is 123456 Add user operation: the first 3 entered users are administrators, press 10# for user entry operation. (need to verify the administrator, the initial state of the administrator is 123456, fingerprints need to be entered 6 times in a row, the password needs to be entered 2 times in a row, the length of the password is 6 to 10 digits, after the entry is successful, the system automatically hibernates) Press 21# for mute setting operation, after verifying the administrator successfully, the mute will be turned on or off automatically. Press 888# to reset the factory settings, after verifying the administrator successfully, all user information, including the administrator will be deleted. If you have not entered the administrator, after entering 888#, the system will directly enter the initialization without checking the administrator.. Package List: 1 x Outer Handle 1 x Inner Handle 1 x Lock Core 1 x Square Bar 2 x Keys 1 x Screwdriver 4 x Screws 1 x Spring 1 x Latch 1 x Latch Box 4 x Long Screws 2 x Screw Connection Tubes