Background
A large number of gas meters and tap water meters in cities are read manually, with low efficiency and high labor cost. In recent years, the emergence of intelligent gas meter and intelligent water meter makes automatic meter reading possible. Because the gas meter and water meter can not be connected frequently, the intelligent gas meter and water meter will adopt the low power WAN Solution so as to achieve long-term use without frequent battery replacement. With the continuous investment of carriers in NB-IoT network and the increasing coverage, the low-power NB-IoT Solution has gradually become the preferred choice for intelligent gas meters and water meters.