HAC-NBi module independently researched and designed by ShenzhenHACTelecom Technology CO.,Ltd, for the special utility of oboe metering, Hall metering, control valve, touch keys, infrared communications, Nb-IOT integrated products . The module adopts NB-IoT module modulation and demodulation design, which solves the problem that the small data can’t transmitter far when far from center gateway for long distance communication in complex environment . Compared with traditional modulation technology, the HAC-NBi module has obviously advantages in suppressing the co-channel interference, which solves the disadvantage that the traditional design can't process the distance, anti-disturbance, high power and the need of the central gateway. Besides,it integrates+23dBm power amplifier,get -129dBm higher receiving sensitivity The solution is ideal for applications where high reliability is required for long-distance transmissions.