The SF-100 Fingerprint Proximity Access Control System includes a standard industrial STN 128 x 64 LCD. Each user can register three separate sets of fingerprints. There is no need for cards or ID for fingerprint matching. The maximum capacity of the proximity main system is 4,000 cards. It also has a backlight, a 4 by 4 luminous stainless steel key pad, and built-in time and attendance function. The optical-base reader is made from polycarbonate fireproof material in white or dark gray.