Davis Instruments AirLink Professional Air Quality Sensor for Indoor or Outdoor use. Provides Air Quality Index…

Amazon.com Price: $215.94 (as of 01/31/2023 10:07 PST- Details)

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Global Air Quality Indices: Choose from a growing list including US, Canada, Mexico, China, EU, UK, Australia, India, and South Korea.

Real Time Readings: See updates on your phone and computer every minute.