Storage Capacity Fingerprint Templates 1000 Transaction Storage1,00,000 Card Capacity NA Card Reader NO Biometric Fingerprint Sensor 500 DPI Optical Sensor Audio/VisualDisplay2.8” Color TFT Keypad4 x 4 Keypad LED Indicator Green/Red Schedule Bell/Speaker Mini Speaker CommunicationCommunicationRS232, RS485, TCP/IP, USB Push data Yes Standard features Schedule Bell,Self Service Query, SSR Recorder, Automatic Switch, DST, T9 Input Power… Continue reading ESSL Identix K21 PRO Biometric Fingerprint Scanner