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10 Best Ndir Co2 Monitors - Holiday Sale
Best Choice01SAFSAF Aranet4 Home: Wireless Indoor Air Quality Meter for Home, Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History
Free Shipping9.8Exceptional
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Value for Money02GAIN EXPRESSIndoor Air Quality 9999ppm Digital Carbon Dioxide Detector Temperature Humidity NDIR Sensor IAQ CO2 Monitor CO2 Detector Meter WB DP Tester
Main highlights- Triple Display Convenience: Enjoy the convenience of triple displays showcasing CO2 level, temperature (in °C/°F), and humidity, providing you with real-time information for a thorough IAQ analysis.
- Stable NDIR Sensor: Equipped with a stable NDIR sensor, this meter ensures accurate detection of CO2 levels, enabling you to monitor and control indoor air quality effectively.
- Portable and User-Friendly Design: With a portable and compact design, this meter offers easy handling and transport. It features dual power sources (battery included or 9V adaptor, not included) and supports PC connection for on-line logging and data analysis. The meter also allows for manual calibration of CO2 and humidity.
- Comprehensive Indoor Air Quality Monitoring: This CO2 meter measures CO2 level, Air Temperature, Dew Point, Wet Bulb Temperature, and Humidity, making it an ideal instrument for diagnosing and assessing indoor air quality (IAQ) in various settings such as offices, classrooms, hospitals, and hotels.
- Advanced Features for Enhanced Analysis: Benefit from statistics of weighted averages, TWA (8-hour weighted average), STEL (15-minute weighted average), backlight for easy visibility, data hold function, and Min/Max recording. The built-in sound warning alarm alerts you to high-level CO2 risks.
9.7Exceptional
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- 03SwitchBot
SwitchBot Air Quality Monitor Indoor Meter Pro CO2 Detector, CO2 Monitor, Temperature Humidity Monitor with APP, Bluetooth Air Quality Tester for Car/Home/Office (Meter Pro CO2 2025)
Free ShippingMain highlights- Portable and Durable: Our air quality detector measures 92mm x 79mm x 25mm and weighs just 154g. It has a built-in battery with up to 12 months of life and a low battery warnings. Features wall-mount holes and an adjustable bracket for versatile placement in any environment.
- Part of the SwitchBot Ecosystem: With a SwitchBot Hub, your Battery Circulator Fan or Evaporative Humidifier can automatically activate when CO2 levels exceed the set threshold, enhancing ventilation. This home air quality tester also supports third-party voice control through the Hub, simplifying air quality management.
- High Precision Sensor: Built with Swiss-made NDIR sensors, this CO2 monitor accurately monitors air quality by measuring CO2 levels every 1 second with an accuracy of ±50 ppm and a range of 400-9000 ppm. Its high sensitivity and stability ensure rapid and precise air quality feedback.
- 5-in-1 Multi-Functional Display Screen: SwitchBot Meter Pro CO2 features a 92-millimeter large screen that simultaneously displays CO2 levels, temperature, humidity, time, date, and comfort level. This indoor air quality monitor makes it easy to monitor your environment and decide when to ventilate for a healthier living space.
- 3 Alarm Methods: Customize CO2, temperature, and humidity range with trigger alerts. When limits are exceeded, you'll be notified via sound alarms, visual screen alerts, and app notifications (SwitchBot Hub required). With this air quality monitor, you can continuously and effectively track air quality.
9.6Exceptional
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- 04SwitchBot
SwitchBot Air Quality Monitor Indoor Meter Pro CO2 Detector, CO2 Monitor, Temperature Humidity Monitor with APP, Bluetooth Air Quality Tester for Car/Home/Office (Meter Pro CO2)
Free ShippingMain highlights- Portable and Durable: Our air quality detector measures 92mm x 79mm x 25mm and weighs just 154g. It has a built-in battery with up to 12 months of life and a low battery warnings. Features wall-mount holes and an adjustable bracket for versatile placement in any environment.
- Part of the SwitchBot Ecosystem: With a SwitchBot Hub, your Battery Circulator Fan or Evaporative Humidifier can automatically activate when CO2 levels exceed the set threshold, enhancing ventilation. This home air quality tester also supports third-party voice control through the Hub, simplifying air quality management.
- High Precision Sensor: Built with Swiss-made NDIR sensors, this CO2 monitor accurately monitors air quality by measuring CO2 levels every 1 second with an accuracy of ±50 ppm and a range of 400-9000 ppm. Its high sensitivity and stability ensure rapid and precise air quality feedback.
- 5-in-1 Multi-Functional Display Screen: SwitchBot Meter Pro CO2 features a 92-millimeter large screen that simultaneously displays CO2 levels, temperature, humidity, time, date, and comfort level. This indoor air quality monitor makes it easy to monitor your environment and decide when to ventilate for a healthier living space.
- 3 Alarm Methods: Customize CO2, temperature, and humidity range with trigger alerts. When limits are exceeded, you'll be notified via sound alarms, visual screen alerts, and app notifications (SwitchBot Hub required). With this air quality monitor, you can continuously and effectively track air quality.
9.3Excellent
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- 05INKBIRDPLUS
INKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, Indicator Light, Alarm, Auto Calibration, for Home, Office, Travel
Free ShippingMain highlights- Wide Application: You will get—— 1x CO2 detector, 1x lanyard, 1x 2m charging cable, and a user manual. This portable CO2 monitor is suitable for home, office, grow tent, greenhouse, production warehouse, raw material processing, indoor home decoration, and more.
- Portable and Long-Lasting: Because of its small size and portability, you can take it anywhere and hang it with the included lanyard. And it comes with a built-in 1000mAh lithium battery that can be fully charged within 3 hours and last about 72 hours.
- High-Quality CO2 Detector: INKBIRDPLUS adopts an advanced NDIR sensor, which detects carbon dioxide through infrared sensing technology and has high precision, strong anti-interference, and excellent stability for detecting carbon dioxide concentration at any time and anywhere you stay.
- HD Full-Color LCD Display: Its big full-color LCD screen is easy to read and eye-caring. If there is no operation for 5 minutes, it will automatically enter energy-saving ECO mode, causing no disturbance to the surrounding environment.
- Dual Alarm Function: This CO2 monitor has CO2 indicator lights on its screen—green light for good (400~699ppm), yellow light for medium (700~1499ppm), and red light for dangerous state (1499~5000ppm). When the detected CO2 concentration exceeds 1500 ppm, the device will also sound an alarm to remind you. And the CO2 alarm value is customizable.
9.1Excellent
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- 06U UNNI
U 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
Free ShippingMain highlights- calibration process:Place the device in a standard calibration environment of 400PPM,Press and hold the ALERT button, and power on the device or install the battery,The device will sound "Bi-BI" and the screen will display the "CAL" character and keep blinking,After three minutes of calibration, the "PASS" character will be displayed. Power off and power on the device.
- USB POWERED OPTION & BATTERY BACKUP & ADJUSTABLE BACKLIGHT – It is plugged in which allow the multi brightness display to stay on all the time, if you prefer. Either set it on tabletops, or mount it on the wall. 3 x AAA Battery(not included) for Backup & outdoor manual calibration.
- INDOOR AIR QUALITY MONITOR - Detect rise and decrease in carbon dioxide level, perfect for anyone wanting to monitor air quality! Elevated CO2 can cause symptoms like headaches, drowsiness, allergies and difficulty concentrating, to keep an eye on air quality at home or work!
- IMPROVE VENTILATION – Very useful for high concentration of poor air quality and cooking indoors and it will indicate to open a window/door to refresh the area to get the levels lower. CO2 monitor for Home, RV, Grow Tents.
- HIGH-PRECISION SENSIRION CO2 SENSOR – Equipped with Swiss-made Photoacoustic Sensor provides precise and reliable readings, which gives you peace of mind about the air in your home. CO2 detection range：400～5000PPM,accuracy：+/- 5% + 50PPM. Temperature range: 14.2°F ~ 122°F, Humidity range: 20% to 95 %.
- CARBON DIOXIDE DETECTOR for HOME, SWITCH °C/°F – Great item for any home to monitor the weather and air quality! Real-time CO2 value, temperature and humidity, CO2 history chart, CO2 Concentration range, 3 Adjustable Volume for Alarm Setting & 3 Adjustable Backlight, Max/Min Data, Low battery indicator.
9.0Excellent
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- 07SwitchBot
SwitchBot Air Quality Monitor with Hub Mini, Temperature Humidity Sensor with APP, Bluetooth Air Quality Tester for Car/Home/Office (Meter Pro CO2+Outdoor Meter+Hub Mini)
Free ShippingMain highlights- Portable and Durable: Our air quality detector measures 92mm x 79mm x 25mm and weighs just 154g. It has a built-in battery with up to 12 months of life and a low battery warnings. Features wall-mount holes and an adjustable bracket for versatile placement in any environment.
- Part of the SwitchBot Ecosystem: With a SwitchBot Hub, your Battery Circulator Fan or Evaporative Humidifier can automatically activate when CO2 levels exceed the set threshold, enhancing ventilation. This home air quality tester also supports third-party voice control through the Hub, simplifying air quality management.
- High Precision Sensor: Built with Swiss-made NDIR sensors, this CO2 monitor accurately monitors air quality by measuring CO2 levels every 1 second with an accuracy of ±50 ppm and a range of 400-9000 ppm. Its high sensitivity and stability ensure rapid and precise air quality feedback.
- 5-in-1 Multi-Functional Display Screen: SwitchBot Meter Pro CO2 features a 92-millimeter large screen that simultaneously displays CO2 levels, temperature, humidity, time, date, and comfort level. This indoor air quality monitor makes it easy to monitor your environment and decide when to ventilate for a healthier living space.
- 3 Alarm Methods: Customize CO2, temperature, and humidity range with trigger alerts. When limits are exceeded, you'll be notified via sound alarms, visual screen alerts, and app notifications (SwitchBot Hub required). With this air quality monitor, you can continuously and effectively track air quality.
8.8Very Good
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- 08TEKCOPLUS
CO2 Meter Portable CO2 Detector Digital CO2 Monitor with Alarm Function Carbon Dioxide Temperature and Humidity Meter, NDIR CO2 Sensor Indoor Air Quality Monitor for Home Office Grow Room
8.6Very Good
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- 09MORPTRA
Professional Indoor Air Quality Monitor with 7X AQI Beep Alarms,16 in 1 Portable Real-Time Detector for PM2.5 | PM10 | CO2 | TVOC | HCHO | Temp | Hum for Home Cars Plants Pets (Gray)
Free ShippingMain highlights- 【Versatile Carry Scenarios & Stylish Design】: With versatile mounting options and a sleek, modern design, the MORPTRA monitor seamlessly fits into any setting, from bedrooms and offices to cars and campsites. Ideal for home, car, nursery, and public space air quality testing, this monitor ensures you breathe easy wherever you are. Trust in the quality of MORPTRA and explore our full range of Air Quality Monitors with confidence. Enjoy a 12-month warranty for added peace of mind.
- 【Up to 4h Run-Time & Fast-Charge】: Enjoy up to 4-5 hours of wireless operation on a single charge with the high-performance lithium battery. The included adapter and Type-C charging cable offer quick charging, allowing you to keep an eye on air quality around the clock.
- 【Professional 16-in-1 Real-time Air Quality Monitor】: With real-time detection of PM1.0 | PM2.5 | PM10 | CO2 | TVOC | HCHO | TEM | HUM, along with 7 kinds of AQI alert buzzers function, this monitor ensures you always know what's in the air around you.
- 【One-button Start & Double-click to Silence Alerts】: Simple one-touch controls make it easy to power on/off, switch between °C/°F, and silence alarms with just a press or double tap. Perfect for beginners and ideal for daily gas detection in any home.
- 【High-precision Sensor System & HD Large Display】: The high-precision sensor system continuously collects and analyzes air data every 3 seconds, providing you with constant updates on the air quality in your space. A clear and advanced color display enhances readability and adds a touch of sophistication to your environment.
8.5Good
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- 10Inkbird
INKBIRD IAM-T2 Bluetooth Air Quality Monitor, Indoor CO2 Detector, Temperature Humidity Monitor, Light and Sound Dual Alert, for Home, School, Hotel
Free ShippingMain highlights- 【Smart Data Management】The IAM-T2 CO₂ sensor stores 30 days of offline data. Smart app offers long-term storage/export for tracking and analysis, helping you scientifically improve indoor air quality.
- 【Personal Security Guard】The IAM-T2 monitor features a white-backlit LCD for clear visibility. Mount on walls or place on desks, adapting flexibly to any indoor space as your dedicated air quality guardian.
- 【Long Battery Life】Featuring a 3000mAh Li-ion battery with 6-hour full charge capability, it sustains 6+ months of continuous operation
- 【Dual Alarm System】The device alarms and the indicator light turns red when CO₂ reaches hazardous levels. Green indicates good air quality, yellow for moderate. Supports custom adjustment of alarm thresholds.
- 【5.0 Bluetooth】With Bluetooth 5.0 connectivity (100m/328ft range), the device enables real-time residential air quality monitoring via the INKBIRD app.
- 【3-in-1 Detection】The IAM-T2 CO₂ monitor simultaneously tracks carbon dioxide, temperature, and humidity, utilizing Swedish Sensirion and NDIR high-precision sensors to deliver accurate residential air quality insights.
8.4Good
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