Blynk server shown last saved value even module is disconnected


I’m new on Blynk IoT cloud

I’m developing one project it will read soil moisture and update on Blynk server, every thing is working fine, but when I turn off my module, server is showing last saved value, how can I change the setting that when module is not ON or module is disconnected the server don’t show the value of sensor.

Is there any option ?

Yes, it is possible.
When you define/edit your datastreams, in the Advanced settings there is the “Invalidate Value” option.
It’s covered in the documentation here:



It works :grinning: :grinning: :grinning: :grinning: :grinning:

thank you very nuch.

Hi @PeteKnight ,

It works but I have to manually refresh the device page in the app. The same thing happens in the dashboard. Is it possible that this refreshment appears automatically in the application? In such a way that the user realizes that the device is disconnected?

Your question has been answered here…

So closing this topic.