Advertising Disclosure Indoor Co2 Meter Detector Comparison - August 2025
5 Best Indoor Co2 Meter Detector In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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| 1 Best Choice  9.8Exceptional | 2  9.7Exceptional | 3 Best Value  9.5Excellent | 4  9.4Excellent | 5  9.3Excellent |
| View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon |
ModelSwitchBot 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 | Model 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 | Model LSENLTY WiFi CO2 Detector, 5s Refresh High Accuracy Smart CO2 Monitor, App Control Indoor CO2 Meter with Alert, 1 Year Data Storage Air Quality Monitor for Home, Office(Only Supports 2.4G WiFi) | Model Brandson - CO2 Detector, Co2 Monitor Carbon Dioxide Detector Alarm, Co2 Sensor Digital USB, Indoor Air Quality Sensor Monitor with Temperature Humidity for Home Office Gym Car | Model Air Quality Monitor Indoor, 5 in 1 CO2 Monitor CO2 Detector Portable Air Quality Meter Carbon Dioxide Monitor with LCD Display, for Home Kitchen Office Car |
BrandSwitchBot | Brand Newentor | Brand LSENLTY | Brand Brandson | Brand Ejoyous |
Reviews | Reviews | Reviews  | Reviews | Reviews - |
Tech Specs | ||||
item weight 227 g | item weight 220 g | item weight 300 g | item weight 100 g | item weight 165 g |
batteries included Yes | batteries included No | batteries included Yes | batteries included Yes | batteries included - |
customer reviews4.3 4.3 out of 5 stars 219 ratings 4.3 out of 5 stars | customer reviews 4.3 4.3 out of 5 stars 252 ratings 4.3 out of 5 stars | customer reviews 4.2 4.2 out of 5 stars 69 ratings 4.2 out of 5 stars | customer reviews 4.2 4.2 out of 5 stars 11 ratings 4.2 out of 5 stars | customer reviews - |
batteries required Yes | batteries required No | batteries required Yes | batteries required Yes | batteries required - |
product dimensions 9.2 x 2.4 x 7.9 cm 226.8 g | product dimensions - | product dimensions 9.8 x 9 x 4 cm 300 g | product dimensions 8 x 2 x 8 cm 100 g | product dimensions - |
batteries 1 AAA batteries required. included | batteries - | batteries 1 Lithium Polymer batteries required. included | batteries 1 Lithium Ion batteries required. included | batteries - |
included components Instruction Manual | included components - | included components User Guide x1, Type C Cord x1, Carbon Dioxide Detector x1 | included components Brandson carbon dioxide meter with rechargeable battery, USB to DC charging cable and user manual | included components - |
power source Battery Powered | power source - | power source Battery Powered | power source Battery Powered | power source - |
battery cell type Alkaline | battery cell type - | battery cell type Lithium Polymer | battery cell type Lithium Ion | battery cell type - |
color- | color Black | color Black | color A | color - |
Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1SwitchBotSwitchBot 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
Main highlights- Portable and Durable: Our air quality detector measures 3.6" x 3.1" x 0.9" and weighs just 0.34 lb. 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 SwitchBot Ecosystem: With A SwitchBot Hub, exceeding CO2 levels can automatically activate your Battery Circuit Fan or Evaporative Humidifier for enhanced ventilation. Hubs also enable third-party voice control, simplifying air quality management.
- Multiple 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). Ensuring you can monitor air quality effectively at all times.
- High Precision Sensor: Featuring NDIR Swiss industrial-grade sensors, this device accurately monitors air quality by measuring CO2 levels every 1 second with an accuracy of ±50 ppm and a range of 400-9999 ppm. Its high sensitivity and stability ensure rapid and precise air quality feedback.
- 6-in-1 Multi-Functional Display Screen: SwitchBot Meter Pro CO2 features a large screen that simultaneously displays CO2 levels, temperature, humidity, time, date, comfort level, and weather forecasts (SwitchBot Hub 2 required). Making it easy to monitor your environment and decide when to ventilate for a healthier living space.
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9.7
2Newentor
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
Why we love it
Advanced Swiss sensor ensures accuracy.
Customizable CO2 alerts enhance safety.
Multi-functional with temperature and humidity monitoring.
Main highlights- [Carbon Dioxide Concentration Alerts]: The CO2 concentration alert value can be customized to make our life, work or production environment safer.
- [Temperature and Humidity Monitor]: Temperature and humidity are closely related to human body, plants or storage environment. This air quality tester has the function of real-time monitoring of temperature and humidity.
- [Wide Range of Applications]: This CO2 sensor is widely used in agricultural planting, greenhouse vegetables, production warehouses, raw material processing, daily life, computer room, wine cellar, RVs, schools, cafes, etc.
- ★[High-precision CO2 Sensor]: The CO2 detection adopts the most advanced sensor of Swiss Sensirion's unique PASens technology, and adopts the photoacoustic detection principle to perform accurate and reliable measurements in a wide range of concentration areas and applications.
- [Clock Calendar and Alarm Clock]: This indoor air quality meters can also be used as a daily clock and alarm clock, with multiple functions to make life more convenient.
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9.5
3LSENLTY20% Off
LSENLTY WiFi CO2 Detector, 5s Refresh High Accuracy Smart CO2 Monitor, App Control Indoor CO2 Meter with Alert, 1 Year Data Storage Air Quality Monitor for Home, Office(Only Supports 2.4G WiFi)
Main highlights- Your Smart Air Quality Monitor: LSENLTY 3-in-1 CO2 monitor supports all basic functions(CO2, Temperature, and thermometer hygrometer monitor) as well as smart functions such as remote monitoring, CO2 concentration, temperature, and humidity graphs. Our indoor CO2 detectors are reliable and easy to use for homes, greenhouses, and more.
- Smart CO2 Alerts: Once it exceeds 1500ppm, it will automatically alarm, and you can also set different alarm ranges according to your own needs. You'll receive an instant alert once the CO2 is out of its preset range. Know the status of your bedroom, baby room, wine cellar, basement, plant nursery, or other areas.
- Large Capacity Rechargeable Battery: The CO2 detector has a built-in large capacity rechargeable battery, standby for up to 24 hours. You can check the air quality from anywhere, or have the device continuously monitor at a specific location.【We recommend customers use the Indoor CO2 Meter in charging condition so that you will not worry about low battery】
- High Accuracy and Fast Refresh Time: With the high-quality smart sensor, the CO2 is accurate up to ±5%(CO2 detection range: 400-5000PPM), the temperature is accurate up to ±1.8℉(Temperature detection range: -10-40℃) while the humidity is ±5%RH(Humidity detection range: 0-99%RH). Up to 5S refresh speed always gives you the latest changes in CO2 concentration value, temp, and humidity.
- Full-Color Large Screen: This Indoor CO2 Meter is easy to read due to a bright LCD screen with large numbers. The CO2, temp, humidity records, and comfort indicators (normal/warning/dangerous stage) will keep you aware of the indoor air quality at any time.
- Data Storage: Make plans according to historic CO2, temp, and humidity data. The curve graphs provide a clear data-changing track. You can export data when you need. Stay on track with your daily routine.
- CO2 Concentration Stage: This CO2 detector is designed with 3 stages of CO2 concentration—normal stage (400-700 ppm), warning stage (700-1500 ppm), and dangerous stage (1500-5000 ppm). LSENLTY smart CO2 detector provides you with a more smart way to a healthy life.
- 2 Easy Installation: You can hang the indoor CO2 monitor to the wall for easy viewing, also you can place the Carbon Dioxide Detector on your office or living room desk. The indoor CO2 meter for grow tents is ideal for use in grow rooms, offices, kitchens, schools, kitchens, school cellars, and cars.
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Features
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Consumer Reviews
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Popularity
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Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
