ZKTeco SF100. Display & Sensor • Display: 2.4-inch TFT (320 x 240) color screen • Fingerprint Sensor: ZK Optical Sensor (500 DPI) • Algorithm Version: ZKFinger V10.0. Capacity • Fingerprint Capacity: 1,500 templates • Card Capacity (Optional): 5,000 (EM or Mifare / IC cards) • Record / Log Capacity: 80,000 transactions