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10 Best co2 monitor co2 sensors of 2025
Save up to 55% off
Best Choice1
Gain ExpressCO2 Meter Air Quality Monitor Handheld CO2 Monitor 0~9999ppm Measurement Carbon Dioxide Temperature Humidity Detector NDIR Sensor Indoor Outdoor Air Quality Tester
9.8Exceptional
Our Rating
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Value for Money2
SwitchBotSwitchBot Meter Pro CO2 Indoor Air Quality Monitor 5-in-1, CO2 Alarm, Large Display, Bluetooth Air Quality Tester for Home, Office, 2-Year Data Storage
Key specs-
Temperature:Displayed on screen
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CO2 Levels:400-9000 ppm
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Humidity:Displayed on screen
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TVOC:N/A
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HCHO:N/A
9.5Excellent
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3
U UNNIU UNNI CO2 Monitor Carbon Dioxide Detector for Home, 3 Adjustable Volume for Alerts & 3 Adjustable Backlight, Photoacoustic Sensor for Temperature Humidity & Indoor Air Quality Monitor
23% OffKey specs-
Temperature:14.2 F - 122 F
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CO2 Levels:400-5000 PPM
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Humidity:20% - 95%
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TVOC:N/A
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HCHO:N/A
9.4Excellent
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4
INKBIRDPLUSINKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, for Home, Office, Travel (PTH-10C)
9.1Excellent
Our Rating
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5
TemtopTemtop CO2 Monitor Indoor air Quality Monitor Portable CO2 Meter, CO2, Temperature, Humidity Home, Office or School
9.0Excellent
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6
LunarlipesLunarlipes Portable 4-in-1 Carbon Monoxide Detectors, Mini Carbon Monoxide and Carbon Dioxide Monitor with Magnetic Suction, RV CO CO2 Detector Alarm Temp/Humidity Sensor, CO CO2 Air Quality Monitor
8.9Very Good
Our Rating
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7
NewentorNewentor CO2 Monitor, Indoor Air Quality Meters, Carbon Dioxide Detector with Voice Alert, Large Display CO2 Tester, Temperature Humidity Sensor, Alarm Clock for Home, RV, Grow Tents, Black
30% OffKey specs-
Temperature:Real-time monitoring
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CO2 Levels:High-precision CO2 Sensor
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Humidity:Real-time monitoring
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TVOC:N/A
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HCHO:N/A
8.8Very Good
Our Rating
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8
InkbirdINKBIRD Smart 3-in-1 CO2 Monitor with Bluetooth | Air Quality Monitor Detects CO2, Temperature, Humidity | Indoor CO2 Detector with Dual Alarm for Home, Office, Grow Tent, Travel etc.
8.7Very Good
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9
TACKLYTACKLY CO2 Detector with Air Quality Monitor Sensor - Carbon Dioxide Detector with Indoor Thermometer for Home - Digital Higrometer for Indoor Humidity and Temperature (CO2 + Air Quality Monitor)
55% Off8.5Good
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10
AirKnight MonitoringAirKnight Monitoring CO2 Monitor Indoor with Bonus Humidity & Temperature Readings | Carbon Dioxide Meter, Homebrewing - Carbon Dioxide Detector, Portable CO2 Detector, CO2 Meter Indoor, CO2 Sensor
8.4Good
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