the idea is not that is change its state, the idea is just that it stops sending as a device without energy would do.

the accu-thing does work, i figured out AFTER i posted ^^

I wanted a comparing combinator to work as a switch for a powersupply-activator if no energy is there...

As long as I have NOT attached an energy-supply to it, it worked
427520_20170704031736_1.png

But after attaching an energypole:
427520_20170704031746_1.png


and removing it then:
427520 ...