Z-wave based irrigation valve? (alternative to Sonoff SWV)

Hi, folks,

I'm trying to find a z-wave alternative to the Sonoff SWV -- zigbee seems to be too unreliable at the particular location (yes, I have repeaters, etc, but they don't cover the area).

Any suggestions? I wasn't able to find something z-wave based that would work on EU frequencies.

I've even thought of an electric valve controlled by a simple z-wave switch, but this would require a power connection.

Thanks