1Fit for Atmel 9G25 (400 MHz) CPU for Linux. 2Recognition time is less than 0.5 s, high standard fuzzy recognition. 3Excel downloads the USB memory disk to report attendance. 4BS and CS can be freely switched, high precision total reflection optical fingerprint sensor. 5The machine is designed to check attendance with fingerprints and passwords for offices, factories, hotels, schools, restaurants, retail stores, hospitals.