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10 bestCo 2 Monitorof December 2025

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AZDelivery 5 x MQ-2 Butane Hydrogen Gas Smoke Detector LPG MQ2 Air Quality Sensor Module Compatible with Arduino and Raspberry Pi including E-Book!
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6% off

1

SAF Aranet4 Home: Smart Indoor Air Quality Monitor - CO2, Temperature, Humidity, Portable & Battery-Powered, E-Ink Screen, Free App Integration
SAF Aranet4 Home: Smart Indoor Air Quality Monitor - CO2, Temperature, Humidity, Portable & Battery-Powered, E-Ink Screen, Free App Integration

SAF

9.8

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25% off

2

Airthings 2930 Wave Plus - Radon and Air Quality Monitor with CO2, VOC, Air Pressure, Humidity and Temperature Detector
Airthings 2930 Wave Plus - Radon and Air Quality Monitor with CO2, VOC, Air Pressure, Humidity and Temperature Detector

Airthings

9.6

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3

Temtop Air Quality Monitor CO2 PM2.5 PM10 Formaldehyde Data Export Particles Air Quality Detector, Temperature Humidity Display, M2000 2nd
Temtop Air Quality Monitor CO2 PM2.5 PM10 Formaldehyde Data Export Particles Air Quality Detector, Temperature Humidity Display, M2000 2nd

Temtop

9.3

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33% off

4

SwitchBot CO2 detector with Built-in Hygrometer, Temperature Humidity Monitor with carbon dioxide monitor, Bluetooth CO2 Monitor, 2-Year Data Storage, SwitchBot Hub Required for WiFi Function
SwitchBot CO2 detector with Built-in Hygrometer, Temperature Humidity Monitor with carbon dioxide monitor, Bluetooth CO2 Monitor, 2-Year Data Storage, SwitchBot Hub Required for WiFi Function

SwitchBot

9.0

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36% off

5

Netatmo Smart Indoor Air Quality Monitor (temperature, humidity, noise and CO2 sensors), NHC-UK
Netatmo Smart Indoor Air Quality Monitor (temperature, humidity, noise and CO2 sensors), NHC-UK

Netatmo

8.7

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Related productsUp to 11% off

AZDelivery 5 x MQ-2 Butane Hydrogen Gas Smoke Detector LPG MQ2 Air Quality Sensor Module Compatible with Arduino and Raspberry Pi including E-Book!

AZDelivery 5 x MQ-2 Butane Hydrogen Gas Smoke Detector LPG MQ2 Air Quality Sensor Module Compatible with Arduino and Raspberry Pi including E-Book!

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AZDelivery 5 x MQ-135 MQ135 Air Quality Gas Smoke Detection Sensor Module Compatible with Arduino and Raspberry Pi, Including E-Book!

AZDelivery 5 x MQ-135 MQ135 Air Quality Gas Smoke Detection Sensor Module Compatible with Arduino and Raspberry Pi, Including E-Book!

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AZDelivery 5 x Carbon Dioxide metal oxide Gas Sensor with High Sensitivity Air Quality On-board Detection Sensor Module

AZDelivery 5 x Carbon Dioxide metal oxide Gas Sensor with High Sensitivity Air Quality On-board Detection Sensor Module

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INKBIRD INK-CO2W WIFI CO2 Monitor, 3 in 1 Indoor Air Quality Detector, Carbon Dioxide Meter Temperature Humidity Monitor, CO2 Alarm Meter, App Control, Backlit Screen

INKBIRD INK-CO2W WIFI CO2 Monitor, 3 in 1 Indoor Air Quality Detector, Carbon Dioxide Meter Temperature Humidity Monitor, CO2 Alarm Meter, App Control, Backlit Screen

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16% off

6

Airthings 321 Wave Enhance -Indoor Air Quality Monitor for CO2, VOC, Humidity, Temp, Pressure plus Noise & Light Sensors - Monitors Conditions for Sleep in Bedrooms & for Concentration in Home Offices
Airthings 321 Wave Enhance -Indoor Air Quality Monitor for CO2, VOC, Humidity, Temp, Pressure plus Noise & Light Sensors - Monitors Conditions for Sleep in Bedrooms & for Concentration in Home Offices

Airthings

8.4

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7

GAIN EXPRESS CO2 Meter Handheld CO2 Monitor 9999ppm Measuring Range Carbon Dioxide Detector NDIR Sensor Air Quality Temperature Humidity Meter
GAIN EXPRESS CO2 Meter Handheld CO2 Monitor 9999ppm Measuring Range Carbon Dioxide Detector NDIR Sensor Air Quality Temperature Humidity Meter

GAIN EXPRESS

8.1

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8

LifeBasis Air Quality Monitor 10-in-1 CO2 Monitor Rechargeable with Stand Real-Time AQI,PM1.0,PM2.5,PM10,TVOC,HCHO,Particles,Temp and Humidity Air Quality Detector Indoor for Home Office School
LifeBasis Air Quality Monitor 10-in-1 CO2 Monitor Rechargeable with Stand Real-Time AQI,PM1.0,PM2.5,PM10,TVOC,HCHO,Particles,Temp and Humidity Air Quality Detector Indoor for Home Office School

LifeBasis

7.8

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9

INKBIRDPLUS Portable CO2 Detector, Indoor Air Quality Monitor, Carbon Dioxide Monitor, CO2 Alarm Meter with LCD Display, Rechargeable Battery for Home, Office
INKBIRDPLUS Portable CO2 Detector, Indoor Air Quality Monitor, Carbon Dioxide Monitor, CO2 Alarm Meter with LCD Display, Rechargeable Battery for Home, Office

INKBIRDPLUS

7.5

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25% off

10

Newentor CO2 Monitor, Air Quality Monitor Indoor Carbon Dioxide Detector with Voice Alert Large Display, Temperature Humidity, Alarm Clocks for Home, RV, Office, Classroom, 400-5000ppm, Black
Newentor CO2 Monitor, Air Quality Monitor Indoor Carbon Dioxide Detector with Voice Alert Large Display, Temperature Humidity, Alarm Clocks for Home, RV, Office, Classroom, 400-5000ppm, Black

Newentor

7.2

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