Irrigation Scheduling

Valve schedules are created in the HPzenAi app and stored on the relay controller. The controller executes schedules independently — valves open and close on time even if the app is closed or the internet is temporarily unavailable. Each of the 8 relay channels can have its own independent daily or weekly schedule, sunrise/sunset-offset timing, or sensor-triggered automation.

Instead of a fixed clock time, schedules can be triggered relative to sunrise or sunset. This is useful for garden watering — for example, 'start 30 minutes before sunrise every day'. The relay controller adjusts start times automatically each day based on the gateway's location data.

To water multiple zones in sequence without running them simultaneously, stagger the schedules across channels with start times spaced by the duration of the previous zone. This prevents excessive current draw and ensures each zone receives adequate pressure.

If an HPzenAi soil sensor (AGRI-SOIL-8F) is connected to the same gateway as the relay controller, irrigation can be triggered automatically based on measured soil moisture rather than a fixed schedule.

Any scheduled valve can be manually opened or closed from the app at any time. The manual state remains active until the next scheduled event fires, or until you manually return the channel to automatic mode.