The AC200MAX is a bit short in explaining the the ECO Mode 
. On page 10, says:
“ECO Mode: While it’s on, the AC output ports will be automatically turned off if the load on it is less than 50W over 4 hours.”
That is great, but after the AC output ports have automatically turned off, … then do you have to manually turn on the AC output ports to use a power load greater than 50W 
. It would be a very nice feature, if ECO Mode could be programed On and Off at desired time intervals . I use AC timers to turn electrical hardware / appliances / devices on and off at desired times . But if the AC output ports have automatically turned off, and the AC output ports does not automatically turn on when needed, then very very inconvenient .