This electrical connection has 4 wires. Red, Black, Green, Blue

Operating Voltage for the valve is 24V AC or 24V DC

Red and Black to connected to Phase and Neutral 24V AC or Positive and Negative of 24V DC

Green and Blue wires to be connected to the Phase and Neutral 24V AC or Positive and Negative of 24V DC to open the valve.

To close the valve remove supply from blue and green wires

24V AC / DC lines to be always connected in the red and black wires

Note: When the power is cut the valve stays in the last position