HAC-NBH module independently researched and designed by Shenzhen HAC Telecom Technology CO.,Ltd, for the special utility of oboe metering, Hall metering, control valve, touch keys, infrared communications, NB-IOT integrated products .
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 .