I would like to buy an openSprinkler but don’t know which one to buy. My garden is watered by a fountain pump (AC), so I would say the water running through the pipes does not have a lot of pressure. And I wouldn’t want to force it anyway not to create more pressure on the pump. Also we also generate current from a solar PV system (24V DC). But we have a 24V-to-220V inverter.
Considering all of the above, I don’t know what to choose as I am having difficulties understanding the difference.
BTW, because of the low pressure, I was thinking of using a Two Way Motorized Ball Valve. Which category does this type of valve enter? Latching or non-latching?
Here’s an example: store item
And here is a demo: youtube demo
If you use motorized ball valve, the 2-wire auto-return is probably the simplest to work with, as it should be able work with OpenSprinkler without modification. The 3-wire or 2-wire reverse polarity both requires either hardware or software modifications. On the link you posted, CR04 seems to be the 2-wire auto-return type.