Ozone Sensor MQ-131 - confirm low or high concentration version

TECHNICAL SUPPORT Sensors & Modules
1

Customer:

I received an Ozone Sensor MQ-131 board. Could you confirm whether this is the low concentration or high concentration version?

Attachment omitted in migration: 20250819_110904556_iOS.heic

Originally submitted via the contact form on soldered.com on 27 August 2025. Migrated to the forum for community visibility.

2

Soldered Support:

This product is the high concentration version. We have recently updated this in our own product info: https://soldered.com/product/ozone-sensor-mq131-breakout-with-easyc/

The datasheet on Reichelt is wrong unfortunately, and we will forward this to our team regarding updating that product info.