# Averaging Time for LED Colors

**URL:** <https://community.purpleair.com/t/averaging-time-for-led-colors/22363>\
**Category:** Sensors\
**Created:** [October 2, 2025, 6:32pm UTC](https://community.purpleair.com/t/averaging-time-for-led-colors/22363 "2025-10-02T18:32:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mcmantm](https://avatars.discourse-cdn.com/v4/letter/m/58956e/32.png) [@mcmantm](https://community.purpleair.com/u/mcmantm)\
**Post date:** [October 2, 2025, 6:32pm UTC](https://community.purpleair.com/t/averaging-time-for-led-colors/22363/1 "2025-10-02T18:32:32Z")

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Do the LEDs on the ZEN II sensor change color to represent second data, 2-minute average data, or 10 minute average data based on the EPA’s AQI scale?

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**Author:** ![Kieran](https://sea2.discourse-cdn.com/flex020/user_avatar/community.purpleair.com/kieran/32/6220_2.png) [@Kieran](https://community.purpleair.com/u/Kieran)\
**Post date:** [October 22, 2025, 5:33pm UTC](https://community.purpleair.com/t/averaging-time-for-led-colors/22363/2 "2025-10-22T17:33:21Z")

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Hi @mcmantm

The LEDs on PurpleAir sensors, including the Zen, change colors based on the second-by-second data.