@SMARTER I was also surprised it booted up on 5 volt, was running fine for at least 1 hour then I unplugged it. Maybe everything runs on 5 and 3.3 inside and the voltage regulator is happy with 5...

@SMARTER Thanks Smarter! I now that the spec. says 9 volt. I was keen to hear if someone have check the "inside" to see if the actual range is something like 5-12? I have tried to run it on a Iphone...

Can I run tapo C200 on 5 volt, in other words can I use a powerbank as power source?