LRC is a Ultrasonic heat meter displays cumulative heat(kWh)(GCAL),cumulative cooling(kWh), power(kWh), cumulative flow(m3), flow rate(m3/h),inlet water temperature('C), return water temperature('C), inlet and returnwater temperature difference(K), heat meter number, accumulated workingtime; And can display the current date, system meter reading date, storageofthe previous 36 months of operating data (heat, cooling, flow); Lowbattery display and automatic diagnosis error report function; can do M-BusRS-485,pulse output, wireless, LoRa,LoRaWAN.