> For the complete documentation index, see [llms.txt](https://docs.ifreeq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ifreeq.com/faqs/smart-product-solution/sensor.md).

# Sensor

## How is the data read by the sensor in a humidifier transmitted to the cloud?

The data is transmitted through the sensor, MCU, chip, and cloud service in sequence.

## Can a Wi-Fi module be used for a door sensor?

Currently, a Wi-Fi module with low power consumption can be used for a door sensor.