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