Time Attendance GPRS,TCP/IP,USB,EM Card AND Backup Battery as per ... 1.Model:FR-U182.Name:Time Attendance and Access Controller 3. Product brief introduction:GPRS,TCP/IP,USB,EM Card AND Backup Battery ... 7 secondAlarm clockEmbedded alarm clockExternal functionsConnect Electronic lock(Access Control), Electronic bellCommunicationsRS232 or RS485, TCP/IP, USB and Weigand outputAccess controlSupport single ...