Time Attendance Recorder 1.RF frequency: 125 KHz 2.Can register 4000 different user, and eep 20000 new records Rfid Time card Machine/Time RecordingParameter Time Attendance Recorder with EM ReaderSize: L150mm X W100mm X H28mmColor: iron grey, black, whiteLED display, indicate working status and operation stepCan register 4000 different user, and keep 20000 new records.Record-keeping time after ...