@jimklimov Also can add auto exit from eco mode but it's not working on my side, will try to check log from 9sx model by user in #2685

❌ Build nut 2.8.2.2453-master failed (commit ba9e90823c by @jimklimov)

@jimklimov after user @ALEXNETHUNTER test of ECO mode for Eaton 9SX in #2685 :

enter to ECO Mode :  
Enable bypass mode:
upsrw -u admin -p pass -s input.bypass.switch.on=on eaton

Enable ECO mode:
upsrw -u admin -p pass -s input.eco.switchable=enable eaton

Exit from ECO Mode:

Disable bypass mode:
upsrw -u admin -p pass -s input.bypass.switch.off=off eaton

Disable ECO mode:
upsrw -u admin -p pass -s input.eco.switchable=normal eaton

That looks right , not sure why in my case i was need 3th step (bypass.off) to enable ECO mode and need more testing in my case , so its looks very easy .
CC @jimklimov maybe i will close until more testing if this pr needs at all ?

P.S cant find in his log that ups changed status to ECO at all by :
Path: UPS.PowerConverter.Input.[5].PresentStatus.Used, Type: Feature, ReportID: 0x3b, Offset: 32, Size: 8, Value: 0

Converted to draft as needs more testing, see #2697 (comment)

Merged as (rebased) part of #2850