Weathermatic ProLine PL800 Owner's Manual page 5

Note: If display shows "0 ZONES," this indicates no SLM4 modules are currently installed or have ever been installed
under AC power with the control panel firmly closed.
Note: Run/Soak feature can reduce the need to set multiple start times for the purpose of preventing runoff. Using the
combination of multiple start times and Run/Soak cycles can lead to extended watering windows since Run/Soak
cycles are applied to each start time. See Run/Soak, Section 5.4.
2.4 Days to Water
2.5 Omit Times/Days/Dates (Optional)