Rachio 3 WiFi

Can I set up that rachio on a WiFi guest account? I have a client who wants me to connect it to that network

If it uses a regular WPA2 password that you enter along with the SSID, no problem.

If you must enter a password on the router portal page, you are probably out of luck.

@Christastrophe - My Rachio Gen 3 is setup on a guest network, so yes.