> For the complete documentation index, see [llms.txt](https://learn.arduinosa.co.za/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.arduinosa.co.za/sensor-kits/37-in-1-sensor-kit/flame.md).

# Flame

![](https://451694785-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MPda5vaSVRKTQ6AoAmb%2Fuploads%2Fgit-blob-5d72908b3005c6b99a3878e53b3a6b7828714b8d%2Fimage.png?alt=media)

A sensor module to detect flames. The spectral sensitivity of the sensor is optimized to detect emissions from naked flames. The output signal ‘DO’ is pulled high (active high) when a flame is detected. The switching threshold is adjustable via a preset pot. An analog output signal from the sensor is available at pin ‘AO’.

* Typical spectral sensitivity: 720-1100nm
* Typical detection angle: 60°