> For the complete documentation index, see [llms.txt](https://docs.efento.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.efento.io/efento-ble-loggers/using-loggers/special-settings-by-sensor-type/light-sensor.md).

# Light sensor

The  Light Sensor parameters allow you to adjust how the device interprets light levels based on the type of window or cover used in the installation. These settings ensure that the sensor provides accurate readings even when light is partially blocked or filtered. Use these options only when the physical installation conditions differ from the default configuration.

| Attenuation Factor | Specifies the light-reduction factor of the window or cover placed over the sensor. The entered value should be the actual factor multiplied by 1000. **This parameter is preset for the standard Efento cover and should be changed only if a different cover type is used.** | Range: 0 to 100,000. |
| ------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | -------------------- |


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