... 3 different kinds of verification methods for higher security, including fingerprint, password and key. 3. This lock can register maximum ... reliable, durable and low power consumption. 4. Sensor with quality image, accepts dry and wet fingers. 5. Streamline front ... 0, 1, 2, 3). 6. Adjust image distortion, assure fingerprint matching consistency. Technical Parameters 1. Power supply: DC6V, 4 units ...