Alphanumeric display and 4 functional keys for parameters easy setting. Data setting via menu. Digital weekly programming clock with charge reserve of 5 years. Removable terminal boards for easy replacement. Electric featuresPower supply: 230V 50Hz. Consumption: 3 VA. 3 output relays: 1 relay for circulation pump control, 1 relay for valve opening command or stage 1 command, 1 relay for valve closing command or stage 2 command. 1 analog input for delivery temperature (NTC type probes – EC15, EC16).