Not really. I just updated my DOS via apex at the airport. I don't think my sps would have enjoyed the alk swing that would have ensued without this capability ...
It also shuts off my skimmer when my locker is full, protects ato from overflowing if my Tunz fails, shut off pumps incase of leaks or drain clogs, feeds my tank with auto feeder, provides backup failsafe on both chiller and heater temp control, controls vortech pumps across several settings throughout the day, etc. etc. etc. I could continue but you get the point...