... data: keep data for 3 years when no currentLCD: multi-touch screen, 320*240 PixelsVerification mode: fingerprint, card, password, ... period: 24 months. Temperature and humidity: 0 - 45, 20%-80%Optional: WIFI, GPRS, Printer, BatteryApplications: Office, Star-hotel, Villa ... period: 24 months. Temperature and humidity: 0 - 45, 20%-80%Optional: WIFI, GPRS, Printer, BatteryApplications: Office, Star-hotel, ...