For communication and order: ( Phone number appears when clicking the contact button ) TT LOCK smart lock Opening methods: Fingerprint Passcode Smart card (2 included) Manual key (2 included) Full control via mobile app Suitable for interior and exterior wooden, aluminum, and iron doors The device is resistant to rain and dust Bluetooth via mobile For communication and order: ( Phone number appears when clicking the contact button ) #smart_lock #iron_door_lock #exterior_door_lock #wooden_door_lock #smartlock