ZKS-T24 Fingerprint Time Attendance & Access Control System RS232, TCP/IP, Access Control, Embedded alarm clock, 3,000 fingerprint templates, Option ... second Alarm clock: embedded alarm clock Communication: RS232/485, TCP/IP, USB, The capacity of connecting net: 31 units (RS485 ... mode), 255 units (TCP/IP) Show: Time, ID number, Name Language: English, French, ...