在業(yè)務(wù)方面，水氣表上報(bào)數(shù)據(jù)多上報(bào)一次，有的甚至一個(gè)月上報(bào)一次，因此NB-IoT的工作模式非常適合這種業(yè)務(wù)模式。當(dāng)前水氣表比較常用的計(jì)數(shù)方式有干簧管脈沖計(jì)數(shù)和光電直讀計(jì)數(shù)，NB-IoT更適用于光電直讀計(jì)數(shù)。在采用光電直讀計(jì)數(shù)方式的燃?xì)獗碇衂M7100系列模組在PSM模式下功耗可達(dá)2uA，2400mAh的電池在信號(hào)覆蓋比較好的區(qū)域下，續(xù)航時(shí)間可達(dá)25年，在信號(hào)強(qiáng)度弱的情況下，發(fā)射功率4次重發(fā)，電池可續(xù)航達(dá)到15年。通常水氣表的壽命要達(dá)到10年左右，因此ZM7100系列模組能充分滿足當(dāng)前水氣表的功耗要求。
因此GPRS遠(yuǎn)程抄表便應(yīng)運(yùn)而生，它解決了人工抄表一系列問(wèn)題，效率更高，更，用戶繳費(fèi)更加便捷。但是，GPRS表也產(chǎn)生了一些問(wèn)題，通訊基站用戶容量比較小，功耗高，信號(hào)差。而普遍的水氣表都要求是電池供電，因此這對(duì)表類的功耗提出了很高的要求，一般2G通信的瞬時(shí)電流可達(dá)到2A，這對(duì)電池性能的選型和成本控制增加了很大困難
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