> For the complete documentation index, see [llms.txt](https://sensorbeeab.gitbook.io/sensorbeeab-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sensorbeeab.gitbook.io/sensorbeeab-docs/readme/sensorbee-sensors/humidity-sensor.md). # Humidity Sensor *** A humidity sensor quantifies the water vapor concentration in the air, typically expressed as a percentage of maximum potential humidity. In the Sensorbee Pro series, encompassing the Air Pro and Modbus Pro, the humidity sensor is located within the front-end module (**SB3516**). Utilizing a capacitive sensing mechanism, this sensor guarantees precise and dependable readings, regardless of environmental fluctuations. ![Figure 1.](https://content.gitbook.com/content/Afz0SPFdCKHwNzFS2Bnv/blobs/yRAu3YeEA9VuYv9LvXa8/Untitled.png) Figure 1. For comprehensive sensor specifications and performance metrics, kindly consult the [SB3516 datasheet](https://www.notion.so/Datasheets-fd72e01b8f664506a6c6943291b0e92b?pvs=21). In the Sensorbee Lite series, which includes the Air Lite and Modbus Lite, the humidity sensor is housed directly within a connected sensor dome, known as the [SB3380](https://www.notion.so/Parts-of-Sensorbee-Air-Lite-376698053607496d8e131c8c4abc31e4?pvs=21). The humidity sensor employs a capacitive sensing element, ensuring high precision and reliable measurements across varying environmental conditions.
Figure 2. For detailed sensor specifications and performance data, please refer to the [SB3380 datasheet](https://www.notion.so/Datasheets-fd72e01b8f664506a6c6943291b0e92b?pvs=21). ## Installation ### Pro Series Please refer to the particle sensor's documentation for installation instructions. ### Lite Series Please refer to the temperature sensor's documentation for installation instructions.