Hi Rene,

My point on the two outputs is that the master controller has no way of knowing their status.

The way you have it setup will only let you change status without the master knowing what that status is or, go to the extreme of tracking all your changes to these pins. You will be able to get only a blinking LED without knowing when is ON and when is OFF. Saving it in EEPROM won’t do any good to the master after reset or power down. What if I need to turn a heater on if a temperature is bellow a certain value or send feedback information to the remote display that the heater is on?

Again, this is just my opinion.

Regards,

Nick