This node will pipe any received msg to its output. At the same time a time-out interval is set. Upon time-out a defined payload is send. Each new message will reset the time-out.
Motivation
This node is used for IoT as some sensors / applications will just stop sending data instead of providing a defined "no more data" indication. This means the last value will remain dangling around, making further processing uncomfortable. This node will send a defined time-out value, when no more data is received for a certain period of time.