... Parameter of PF-850N Password buttonCapacitive touch buttonsLock modePassword,fingerprint,mechanical key,combination lock settingEmergency power supplyExternal power ... 15KVDimension of PF-850NWhy we choose PF-850N1.Exquisite looks with various color to choose, including 24K gold, champagne ... best of our abilities,as accurate as possible,and with utmost conscientiousness on our part. However, to avoid ...