I made a new branch with the helg of G. Simard from Canada.
https://github.com/opendata-stuttgart/sensors-software/tree/beta-dualPMS
Very interesting. What is the motivation behind this version? Redundancy? Increasing reliability? Helping with correction algorithms?
Because PurpleAir does it… 
Guillaume from project https://revolvair.org/ wanted such a version.
Let’s see what happens with it.
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Oh I see! I am really curious how they are going to leverage the presence of the second sensor.