With either the Rachio Gen 1 or Gen 2, you can rest assured that your system will continue to function even if the WiFi happens to cut out. It will continue to work using onboard memory that stores the last saved schedule and will maintain that schedule until WiFi is resumed. This means that your lawn should stay green even if you lose your internet connection for a few days, and as soon as you get back online you can make adjustments to the schedule and customize your sprinkler system to your heart’s content.