For communication and order: ( Phone number appears when clicking the contact button ) TIR TT LOCK smart lock device PIN code (99 PIN codes) Card (up to 50 cards) and the device comes with 2 cards Open with PIN code Open with backup key Control via TTLock app For communication and order: ( Phone number appears when clicking the contact button ) #smart_lock #smart_door_lock #smartlock #smart_lock #smart_door_handles #the_smart_lock #smart_door_lock #electronic_locks #electronic_locks #smart_lock_apartment_door #smart_lock_exterior_door #smartlock #smart_door_lock #door_fingerprint #install_smart_lock #door_lock