【Unlocking Method】Supports fingerprint, IC cards, passwords, mechanical keys, mobile app to unlock, a variety of unlocking modes are available. Note: it is suitable for doors with thickness of 3.5-5.5cm/1.38-2.17in. 【Remote Unlock】Support Tuya function, can connect to cell phone via , which can realize remote unlocking. You can view the unlocking record through the APP and understand the use of the door lock in time. 【Virtual Password Designer】You can add several incorrect passwords before / after inputting the correct password, then press # to confirm the lock. (Anti-peep function supports input up to 16 digits). 【Anti-peeping Password】Prevent others from looking at your password, self-check at startup, smart ID, speed dial, such as fingerprint + password or card + password, etc. When you forget to replace the battery and can't open the door, USB emergency power supply can help you. 【 Locking Module】The door lock module is waterproof, and resistant. After high and low temperature testing, it is vibration and aging and adapts to harsh environment.