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How to send data from end device to coordinator without using the periodic reporting

Hi,

I want to know if is it possible to send data from the end device to a coordinator without using the periodic reporting method which makes the end device sending the attribute value every x time?

I will explain my application concept to clarify my point:

Think about a sensor (end device) that measures the temperature periodically, and should send the temperature's values to the coordinator only if the value has exceeded certain limit, so I don't want to send the temp periodically but only if the limit value or higher has been detected.

Consider also that the sensor is a battery application, so I have to di that to minimize the power consumption.

Thanks in advance

Arsanios