At the bottom of this thread (Wireless Valve?) you will find a link to a wireless solution that a member has done for his Rachio controller. If you follow the link at the bottom, to the Google Drive, to the Word document, which fully describes the system, another link goes back tot he forum where he invites questions and mentions the system cost about $300, and is capable of supporting 8 valves. I’ve included the original thread to give the background and give the poster proper credit.
