DORHEA ESP32 WiFi 4 Channel Relay Module ESP32-WROOM-32E 4 Channel Development Board AC/DC Power Supply Switch Controller Board for Arduino Smart Home Wireless Control

For a quick and dirty solution I would probably use one of these: https://www.amazon.com/DORHEA-ESP32-WROOM-32E-Development-Controller-Wireless/dp/B0DF2KVQ3X/?th=1 Any popular AI will write the code for you. And an app for wifi remote control. Also, sprinkler valves are not great for water cannons. They open and close slowly - by design. Consider a "direct acting" solenoid valve.