Listen to Device Status Change Event

A Product might have many properties, for example, a Thermometer has Temperature and Humidity. A Device is an instance of a Product, so each device has an instantiated copy of the properties. When the value of these property changes, we call it Device Status Change. In IoT, this is a major trigger for the system to do something.

Add Node

Right-Click anywhere on canvas, select Event/Device Status Change

Drag and drop some device from the device list to the canvas.

Connect node

Connect the Device node to the Device Status Change noe. Now when any of the device's property value changes, the Device Status Change node will be triggered, and our flow will be executed:

Listen only to one property change

If our device has multiple properties, and we only want to listen to one property change, we can connect the Property handle of the Device Status Change node：

Now, we will receive a message only when that specific property changes.