MQ-4 datasheet Rs/R0 concentration chart unavailable

TECHNICAL SUPPORT Sensors & Modules
1

Customer:

I bought the MQ-4 sensors and would like to see the concentration over Rs/R0 chart that was previously available. The link in the PDF datasheet is not working.

Originally submitted via email support on 26 February 2026. Migrated to the forum for community visibility.

2

Soldered Support:

The datasheet is available at: https://soldered.com/cdn/shop/files/Soldered_MQ-4_datasheet.pdf?v=14647886156122307021

The webshop was recently updated and some documentation links were broken. These are being fixed.