Waterproof, Dustproof and Shockproof Portable Fingerprint Time & Attendance Terminal S922 is specifically designed for off-site time management, such as construction sites, logistic industries, large farms, and the mining industry. Features: multiple authentications: support fingerprint, ID card or Mifare card; fingerprint capacity: 50000, card capacity: 50000; communication: TCP/IP, USB-host; built-in 7600 mAh backup battery; IP65 rated waterproof and dustproof protection grade.