Product: Zinc Alloy RFID Lock Material: Zinc alloy Finished: Powder coating IP rating: IP65 Power supply: 2 X AAA alkaline batteries Function length(X): 20.5mm / 30.5mm Mifare System: 13.56MHZ frequency Features ● RFID operation: Easier operation. ● All metal housing: Elegant, more attractive appearance. ● Three-level management: Main admin, Admin, User. ● Public and Private mode: One lock can switch between public mode and private mode freely. ● Master key: Emergency unlocking. ● IP65 rating: High-level resistance to water, humidity and dust. ● Low battery warning: Low battery indicator. ● Anti-microbial: Optional with anti-microbial (Esche Richie coil and Staphylococcus aureus) up to 97%. ● Door thickness available: Various door thicknesses from 0.6mm to 20mm (metal, wood, glass, plastic...). MAKE Locks is your trust-worthy lock partner for future cooperration.For more information about security locks,please visit: https://www.makelocks.com