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LCD screen with large digital display, clear and easy to read. Intelligent backlight, soft and eye protection.

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Hard Wired USB Dual Power Input CO2 Monitor, 7730 AZ - AZ Instrument Corp.

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LSENLTY WiFi CO2 Detector, 1s Refresh High Accuracy Smart CO2 Monitor

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3 in 1 Real time CO2 Detector Plug in USB,CO2 Monitor Sensor with 4 Color Lights Alarm,Air Quality Monitor,℃/℉ Temperature and Humidity Tester Meter,Carbon Dioxide Detector for Indoor,Home,Office : Industrial

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Tuya Wifi 7 In 1 Smart Air Quality Monitor Co2 Meter Tvoc Hcho Pm2.5 Tester Co2 Sensor Formaldehyde