# A&B internal sensors

**URL:** <https://community.purpleair.com/t/a-b-internal-sensors/1714>\
**Category:** Sensors\
**Created:** [August 22, 2022, 4:53pm UTC](https://community.purpleair.com/t/a-b-internal-sensors/1714 "2022-08-22T16:53:50Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Ethan](https://sea2.discourse-cdn.com/flex020/user_avatar/community.purpleair.com/ethan/32/177_2.png) [@Ethan](https://community.purpleair.com/u/Ethan)\
**Post date:** [August 22, 2022, 6:55pm UTC](https://community.purpleair.com/t/a-b-internal-sensors/1714/2 "2022-08-22T18:55:08Z")

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Hi @Hmseiver, in this case, I recommend viewing our [Sensor Maintenance](https://community.purpleair.com/t/sensor-maintenance/1531) article. Try the cleaning method mentioned there.

If that does not help, you may want to look into laser counter replacement. This is mentioned at the bottom of the same article.

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_[View the full topic](https://community.purpleair.com/t/a-b-internal-sensors/1714)._