To set the days that you want your sprinkler system to run using your Node battery powered irrigation controller, use the center button to scroll through to the water days option. Use the right and left arrows to scroll through the dots that signify the days of the week (starting with Monday) and hit plus or minus to select the days to water. Another option is to set your Node controller to use an odd/even watering option, or interval mode to set the number of days between watering cycles.