Conformation icon when you turn system off

I have the Rachio 3. When turning the system off in the iPad OS app I don’t see any ICon, or the like, that lets me know if the system is turned off. Also how do you turn the system back on? If you have to tap the off option again to turn the system on then this is way confusing Without a clear indication on the screen as to which state the system in operating it is hard to use…

Off? As in standby mode?