Device events are events of a device context that are generated by the corresponding device driver once corresponding asynchronous messages are received from the actual hardware device or data source.
Examples of device events:
"Card read" operation of an access control terminal. An event instance contains the ID of the read RFID card.
"Pressure threshold exceeded" event of a controller performing validation of pressure readings against setpoints.
"Cabinet door tamper" event of a large container-based industrial device equipped with own security sensors.