... 5 V, 1∼5 V (can free switch) Flow input: 0∼10 mA, 4∼20 mA, 0 ... 999999) pressure compensation value Display 4- digits (-1999∼9999) flow (differential pressure, frequency) value Display 10- digits (0 ... the full rangeFixed-quantity control can select flow fixed-quantity to control, LED output indicating ... Cipher lock for setting value of parameterProtection mode Flow accumulation remains more than 5 year after ...