Wyze Sprinkler keeps going, even if offline.
There are 3 types of schedules: Smart, Fixed, and Offline. Offline schedules are the default when you lose connection to WiFi.
If your internet connection drops, Wyze Sprinkler will continue to operate on the saved (Fixed) schedule for the next 14 days. After those 14 days, the device will switch to the Offline Schedule you've set in the Wyze app.
To create an Offline Schedule, tap on your Wyze Sprinkler in the app, then tap Settings icon. Next, tap on Schedule. Under “OFFLINE”, tap Offline Schedule.