... Flow counter is composed of 8×4 characters liquid crystal display screen, single chip, RS232 communication port, signal receiving ... s)Measuring Error: ≤ 0.01%Displaying Screen: 8×4 character liquid crystal displayMeasuring Methods: WiredTemperature Range: -10°C-45°CPower ... 30 hours)Storage: Store 999 groups dataCommunication: RS232Clock: Can display year, month, day, hour, minute, and second The ...