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A comment on On whether changes in bedroom CO2 levels affect sleep quality. Parent comment

Re:On whether changes in bedroom CO2 levels affect sleep qua... by Ductapemaster on Monday January 21, 2019 @07:13PM (#18964870)
For a couple hundred bucks you can get a highly accurate CO2 sensor that reads out via a USB-serial connection: https://www.co2meter.com/products/k-30-co2-sensor-module
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