[ 24V AC ] -- { label: "~/~" } [ AC-DC PS 5V ]
[ AC-DC PS 5V ] -- { label: GND } [ Relay ]
[ AC-DC PS 5V ] -- { label: "+5V -> JD-VCC" } [ Relay ]
[ AC-DC PS 5V ] -- { label: GND } [ Node151 ]
[ AC-DC PS 5V ] -- { label: "+5V -> VUSB" } [ Node151 ]
[ Node151 ] -- { label: GPIO } [ Relay ]