Online Offline device monitoring?

Hello Guys,

I am just trying to figure out how to receive a SMS notification when the connection to Blynk or Internet is online and offline.

Obviously when the device is online is easier, but when device goes offline, it requires some external agent to kind of ping the device and in case of long time without response then triggers a SMS…

Any idea?

Thank you very much.
Cássio L.

Hello. You may use HTTP API for that -

That will check device status.