[SOLVED] Sonoff Tasmota firmware Version Check and Update

I think now i got it… publish is mqtt1…

So i hope this is right:
standard-state will be sent all few minutes without any command. So i get many infos. For special infos i have to “ask” the sonoff first. Then i get back an answer.

But:
If i listen to “tele/sonfoss/STATE” and i send a command to update this, i will get back the answer to the topic “stat/sonoff/RESULT” - so i have to use two channels with 2 items to store the values.

Or can i listen to both topics with only one item?

x
x
x

How fast is a sonoff? I want to use a sonoff POW - so how short can i set the interval to read out power consumption (watt)? Is it possible to get new values every second (only for testing)?

Or another example with sonoff S20: Can i set up a rule to ask the sonoff every second, to get back the time? Or is this to fast for the sonoff?