To communicate: ( Phone number appears when clicking the contact button ) A smart door bolt that can be connected via Bluetooth and controlled via the TTLOCK application. It runs on dry AA batteries and the batteries can last up to 10 months depending on usage. Possibility to operate the lock via USB in case of emergency. Low power alert. The smart lock can be put in disable mode, where the lock is always open during occasions. To communicate: ( Phone number appears when clicking the contact button ) #smart_lock #fingerprint_lock #smart_door_lock #smart_handle #smart_bolt #smart_bolts #fingerprint_locks #electronic_lock #apartment_lock #aluminum_door_lock #smartlock #exterior_door_lock ##electronic_lock #apartment_lock #smart_locks #smart_bolts #smart_bolt #fingerprint_bolt #smart_aluminum_lock