Smart meters (AMM) reader (HAN/P1 interface), sending data via NB-IoT network - see NB-IoT coverage, Powered by LiPol chargeable battery or by USB-C charger. RT...
RS485 MODBUS to NB-IoT RTU convertor (typically from metering devices or sensors with RS485 data interface), NB-IoT network - see NB-IoT coverage, up to 32...