... is supporting the use of electric devices products,to control the electric valve opening and closing.Specification1,Operating valve ,380V 50Hz, three ... a field control, 12, 13, 14 terminal can not answer. Electric valve controller for automatic control system, 12, 13, 14 terminals ... front panel to adjust the potentiometer, the opening of the table shows 100%. 7,On-site remote control switch to spot ...