Smart lock for interior doors with ttlock app Bluetooth opens in 5 ways (fingerprint - password - cards - mobile app - manual keys) The lock is suitable for wooden doors. The product is an electronic smart door lock characterized by many modern security and control technologies. Opening methods: Supports opening the door via fingerprint, secret code, smart cards, traditional key. Smart control: The lock can be managed and users added easily via the smartphone app (TTLock). Features: Provides a high level of security and convenience, with ease of use and installation. It operates on four alkaline AA batteries and is made of strong aluminum