Midea Smart Door Lock BF211-D

Specification: • Material: Aluminum Alloy •Color: Black •Access Methods: Fingerprint, Password, Mechanical Key • Capacity: 50 Fingerprints & 25 User Passwords • Password Digits: 6 to 12 Digits • Power Supply: DC6V • 4*1.5V AA batteries • Emergency Power Support: Micro USB • Door Thickness: 35~50mm