... 4.alrm movement Radio Controlled Quartz Clock Step Movement for Alarm Specifications:Model NO.: DM7810 (JJY), DM7830 (DCF), DM7840(MSF) - Step ... /day8. Sensivity:50uV/m(JJY),70uV/m(DCF,MSF)9. Alarm Accuracy: 5minutes10. Buzzer,Snooze (256seconds) / Light: to be wired extra11 ... 9001,MDD. We have successfully passed a series of strict factory audits by Wal-mart, Carrefour, Metro, BSCI, Sedex, etc.2 ...