The DJSF/U193 DC electronic multi rate energy meter (rail) is used for dual circuit metering of charging stations, and its performance indicators meet the requirements of "GB/T33708-2017 Static DC Energy Meter" and "GB/T29318-2012 Electric Vehicle Off board Charging Machine Energy Metering". Meet the needs of users for dual loop measurement and measurement. Suitable for large-scale charging stations, high-power charging piles, communication base stations, and photovoltaic power generation that require DC metering.