I'm looking at creating a zoned irrigation system for my garden where RF-valves can be run off a main water feed that runs around the garden. Essentially a main box would send signals to each valve as it is needed to water a flowerbed. Is anyone aware of RF battery operated valves that I might be able to integrate with Arduino or a Pi. I have seen solutions using relay boards, but I am trying to see if there is a way I can do it without needing to run power cables all around the garden. I am almost thinking of something like the Honeywell Evohome radiator valves but that will be waterproof. Something that is truly wireless. I would consider a wi-fi solution, but would prefer RF.
Many thanks for any pointers to RF valve solutions and transmitters anyone can offer!