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CO2 Meter with LCD Backlight Infrared Detection Indoor Carbon Dioxide CO2 Concentration Detector Intelligent Air Quality Analyzer Tester with Temperature and Humidity Display - Walmart.com
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CO2 Meter Air Quality Monitor Handheld CO2 Monitor 0~9999ppm Measurement Carbon Dioxide Temperature Humidity Detector NDIR Sensor Indoor Outdoor Air Quality Tester: Amazon.com: Industrial & Scientific
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