Sometimes it is useful to know that some of your devices are disconnected from flespi servers or unavailable for a long time.
![Node-Red flow](https://forum.flespi.com/assets/files/2021-04-04/1617568072-463049-device-disconnected-telegram-notification.png)
Open flow on the Node-Red
This example shows you how quickly and easily it is possible to set up a notification that devices are not available for more than 10 seconds using Node-Red.
You can freely change the response time or change how to notify you.
For example, it may not be a telegram bot, but a REST API request to some service.
Some other Node-Red examples: Message processing, Automatic flespi device creation