Is there a fan in the Modduox?
If so, can it be regulated?
When I used the Modduox yesterday, it was 37°C outside temperature 
, I noticed after a long time that the Modduox became very warm, quite hot. I had then rather switched it off.
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I don’t think that there’s a fan inside.
But I wouldn’t be worried about the temperature of the case since the CPU/SoC can get hot pretty quick. For me that’s a sign that the thermal design works. To get the actual temperature try the following on the console of the MOD via SSH: echo "Current SoC temperature: $(($(cat /sys/class/thermal/thermal_zone0/temp)/1000))"
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The duox has no fan, it is passive cooled. The CPU heatsink is in direct contact with the metal case as a way to cool itself off.
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Exactly
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Small addition: I just realized that the CPU temperature is displayed in the web interface when the developer mode is enabled in the advanced settings.
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