- Fingerprint Capacity 1500 - 50, 000 Transactions - Green Silicon Optical Sensor - 3.5 " TFT Color LCD display - Black Casing - Communication RS-232 / 485 & TCP / IP & USB Host / Client - The Clock In / Out & Break In / Out & Overtime In / Out - Schedular Bell - Short Message - Multimedia, Photo ID, Auto Status Mode, Self Attendace Log - Linux OS - Mini Backup UPS 12V - 12V DC Adapter