Once installed, the user must download the Rachio app to connect the controller to their WiFi network. Connecting the Rachio ...

What to do once you have a sprinkler ... serial connection was the unreliable link. Frustration! Opting for a more comprehensive solution, [danman] picked up a LinkNode R4 — a relay controller ...

Learn more. Below you’ll find ratings and reviews of the best smart sprinkler controllers from our tests. One crucial factor sets these top performers apart from the rest of the pack.