DDZY150 single phase local fee control smart meter is a intelligent electricity metering product, which suit for measuring 220V/50Hz single phase active AC power. It has independent optical and RS485 interface, and also with standard interface of LoRaWAN communication module, it sends data to corresponding gateway through LoRaWAN wireless network.(Other wireless communication modes can be customized, such 4G-CAT1, NB-IoT, GPRS, WIFI, etc.) Welcome for inquiry, our web: www.smart-electricmeters.com ; Tel: 0086-84649366; Email: radarkingmarket@hotmail.com