This document presents key specifications of the HAC brand HAC-NBh NB-IoT wireless meter reading RF transmitter module, manufactured in Guangdong, China. It adopts chipset SX1278, SX1276 and BC35-G, with customizable supply options and a service life of at least 10 years on battery power. Supporting multiple global frequency bands including EU433, CN470, RU864, IN865, EU868, US915, AU915, KR920 and AS923, the module delivers a communication distance exceeding 20 kilometers. Its core capabilities cover metering data collection, two-way data communication, valve remote control and near-end equipment maintenance. The complete system consists of a meter reading management platform, handheld terminals and this NB communication module; matching supporting accessories include infrared debugging tools, handheld readers, data management platforms and dedicated mobile APPs. In terms of packaging and logistics, the product is sold as single units, with individual package dimensions of 5.5×3.01×0.38 cm and a gross weight of only 0.009 kg, mainly applied in wireless remote meter reading scenarios.