I have added two automations on your HEMS which should do this. Take a look at see if they work. It may need some further tweaks as I may not have got the payload/topic quite right but its in line with the MQTT API description.
I have added two automations on your HEMS which should do this. Take a look at see if they work. It may need some further tweaks as I may not have got the payload/topic quite right but its in line with the MQTT API description.