... and closing.Specification1,Operating valve ,380V 50Hz, three phase four wire system.2,Control power, BFA-1 ... and "auto off" the corresponding signal input terminals .3,Press the power key, the power led is lit ... cut off the three-phase power supply, change any of the three-phase power supply two phase. 5,Press the off button ... to run, to move the State.8,Rear panel fuse 5×20,1A Electric valve controller