For contact ( Phone number appears when clicking the contact button ) A smart door lock that can be connected via Bluetooth and controlled via the TTLOCK application. It works on dry AA batteries and can last. Possibility to operate the lock via USB in case of emergency. Alert in case of low power. The smart lock can be put in disable mode where the lock is always open at suitable times. For contact ( Phone number appears when clicking the contact button ) #smart_lock #smart_door_lock #smart_entry #glass_door_smart_lock #glass_doors #fingerprint_smart_lock #smart_locks #smart_door_lock #electronic_lock #fingerprint_lock #smart_fingerprint_lock #fingerprint_locks #fingerprint_lock #electronic_lock #ttlock