What does telemetry represent in the context of sensors?

Telemetry in the context of sensors represents the output from those sensors, which typically includes data collected about various environmental or operational factors. This data can consist of temperature readings, humidity levels, pressure values, or any other measurable parameter that the sensor is designed to capture.

In an IoT scenario, telemetry data is critical as it provides insights and informs decision-making processes based on the physical measurements taken by devices. This information is sent from the device to a cloud service or management platform for further analysis and processing.

The other options describe different aspects of data handling and device communication. The input to the cloud refers to the overall data stream received from various devices, but it does not specifically define telemetry. A measurement of device performance could be one aspect of the data, but that doesn't encapsulate the broader definition of telemetry. Similarly, control signals sent to devices pertain to commands or instructions transmitted from a central system to the devices, which is separate from telemetry, which focuses solely on data output.