fix: Home Assistant: Change device_class of eco2 to volatile_organic_compounds_parts
#30840
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Koenkk
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Feb 3, 2026
…anic_compounds_parts` (#30840)
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In general, eCO2 is simply a TVOC-derived value and should absolutely not be treated as CO2 concentration.
This can potentially be dangerous when used in safety-critical automations.
All of these eCO2/TVOC sensors actually can't measure CO2 levels but instead relative TVOC levels expressed as CO2-equivalent calculated by a proprietary algorithm.
More details Koenkk/zigbee-herdsman-converters#11204 (comment)
Related to Koenkk/zigbee-herdsman-converters#11410