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A10VSO100DFLR/31R-PPA12N00
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A10VSO100DFE1/31R-PPA12K02
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A10VSO140DR/31R-PPB12N00
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A10VSO140DFR1/31R-PPB12K01
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A10VSO140DG/31R-PPB12N00
A10VSO140DRG/31R-PPB12N00
A10VSO140DFE1/31R-PPB12N00
A10VSO140DFE1/31R-PPB12N002
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你的员工打卡时发现自己迟到了，赶紧找到他的，签一个特批单。这样就失去了考勤的公证性。不公正和不真实的考勤结果有什么用。所以，笔者认为你要保证门禁系统的长治久安不要图一时花哨的功能购买带液晶的读卡器。关于电源选择问：万一断电的时候怎么办?答：通常的门禁系统供电是采用普通线性电源或者开关电源为整个系统供电的，这样在临时突然断电的时候，门禁就会失效，一般采用2种方案，一是系统中配制可充电的电源，二是系统供电整体由单位的UPS(不间断电源)给出，目的都是保证突然断电后在一段时间内保证系统的正常运转。
