在业务方面，水气表上报数据多上报一次，有的甚至一个月上报一次，因此NB-IoT的工作模式非常适合这种业务模式。当前水气表比较常用的计数方式有干簧管脉冲计数和光电直读计数，NB-IoT更适用于光电直读计数。在采用光电直读计数方式的燃气表中ZM7100系列模组在PSM模式下功耗可达2uA，2400mAh的电池在信号覆盖比较好的区域下，续航时间可达25年，在信号强度弱的情况下，发射功率4次重发，电池可续航达到15年。通常水气表的寿命要达到10年左右，因此ZM7100系列模组能充分满足当前水气表的功耗要求。

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