I bought this INKBIRD CO2 sensor because it uses the NDIR measurement technique, which should be much more accurate than an older sensor I had been using. The older unit seen in the photos uses a chemical method that is temperature sensitive and drifts in value tremendously. I have been using the INKBIRD now for a couple weeks and it does not appear to have any drift or accuracy issues. I love it.
Pros
1. The calibration from the factory appears very good. It measured 430 ppm or so both outside and near a fresh-air intake system I put together for house ventilation. I don't plan on doing any calibration of the unit myself. The value of this NDIR based system is that it should not need periodic cal like my old unit.
2. The values I get for my indoor CO2 are typically in the 600's, which is consistent with what I would expect for our house size, occupancy, and energy efficiency.
3. The unit responds well and reasonably quickly to increases in CO2 due to occupied closed rooms (or inside/outside air switching in car). And if I breath near it (don't breath on it!), I have seen it shoot up to 1500 and recover in a couple/few minutes. Exactly what it should do.
4. The screen is beautiful of course. And the case sits nicely anywhere you put it.
5. The other measurements (temperature, humidity, and air pressure) are good too. HOWEVER, the original cal on humidity seemed to be off by about +10% -- at least relative to two other sensors I trust. FORTUNATELY this was an easy fix through the app. You can just tell it to add or subtract an offset to bring it back to where it should be. Now it tracks the other units well.
Cons:
1. The app is generally nice, and works, but it is a bit unpolished. They should have their developers use the product more to catch things like this: It seems to re-download numbers from the unit all the time. This takes a fair amount of time once you've been using it for several weeks. Also, the scaling of the graphs defaults to just the last few measurements. You can pinch the screen on the phone to rescale it - but why should I have to do this every time? (Yeah - I can live with this considering how well the unit itself works. But a better default behavior like showing the full time-period would be so much better for the user)
2. I had to add a -10 offset to get the humidity readings 'correct'. (See 'pros' above)
3. Air pressure is not displayed on the unit. That's OK really - just worth noting. You have to use the app for that.
4. Response time is kinda slow for temperature. The fastest update rate is 1 per minute (configurable through the app). And the CO2 and humidity numbers retrieved seem to have a response time on the order of a few minutes - which is very good. But the temperature sensor must be mounted to the board/case because it takes on the order of an hour for it to settle to the new value when moved to a new location at a new temp.
Summary: I got this on sale and at the 99 dollars I paid for it, it is amazing. It is also excellent at the full price. It is a real measurement instrument, unlike the old "Air quality monitor" box I had been using which drifted more than 300 ppm over an hour or two, so that it was nearly unusable. In contrast, this AIRBIRD NDIR-based sensor/unit is excellent. No regrets at all. I might even buy another one. (It's nice and portable, so I can take it to places I spend time in to gauge how good their air-exchange rates are :-) )
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This item: INKBIRD Portable CO2 Detector with Bluetooth, Smart Indoor Air Quality Monitor, can detects CO2, Temperature, Humidity, etc., Electronic Ink Display & 4 Years Battery Life, for Home, Office, motorhome
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INKBIRD is a smart IoT technology company and its business was established in 2010. As a high-tech company, INKBIRD has been devoting itself to offering its worldwide users excellent smart home living products, since the date it was established.
INKBIRD will devote our effort to helping customers create a more comfortable, more enjoyable, and more secure life.
Product Description
Monitor indoor CO2, temperature, relative humidity, and air pressure from the app at the same time.
Supports Bluetooth 5.0
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0:55
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Close up look at this Bluetooth CO2 Detector's features
Amy Cicconi
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4:30
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Air Quality Monitor with 4 Years Battery Life
Sophia
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2:11
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InkBird Smart Indoor Air Quality Monitor
Tech Influence
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Customer Review: CO2 levels plus humidity and temperature
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Customer Review: Awesome Co2 sensor
Dad’s Easy Bake Oven BBQ
Reviews with images
Outstanding - much better than chemical based sensors
I bought this INKBIRD CO2 sensor because it uses the NDIR measurement technique, which should be much more accurate than an older sensor I had been using. The older unit seen in the photos uses a chemical method that is temperature sensitive and drifts in value tremendously. I have been using the INKBIRD now for a couple weeks and it does not appear to have any drift or accuracy issues. I love it.Pros1. The calibration from the factory appears very good. It measured 430 ppm or so both outside and near a fresh-air intake system I put together for house ventilation. I don't plan on doing any calibration of the unit myself. The value of this NDIR based system is that it should not need periodic cal like my old unit.2. The values I get for my indoor CO2 are typically in the 600's, which is consistent with what I would expect for our house size, occupancy, and energy efficiency.3. The unit responds well and reasonably quickly to increases in CO2 due to occupied closed rooms (or inside/outside air switching in car). And if I breath near it (don't breath on it!), I have seen it shoot up to 1500 and recover in a couple/few minutes. Exactly what it should do.4. The screen is beautiful of course. And the case sits nicely anywhere you put it.5. The other measurements (temperature, humidity, and air pressure) are good too. HOWEVER, the original cal on humidity seemed to be off by about +10% -- at least relative to two other sensors I trust. FORTUNATELY this was an easy fix through the app. You can just tell it to add or subtract an offset to bring it back to where it should be. Now it tracks the other units well.Cons:1. The app is generally nice, and works, but it is a bit unpolished. They should have their developers use the product more to catch things like this: It seems to re-download numbers from the unit all the time. This takes a fair amount of time once you've been using it for several weeks. Also, the scaling of the graphs defaults to just the last few measurements. You can pinch the screen on the phone to rescale it - but why should I have to do this every time? (Yeah - I can live with this considering how well the unit itself works. But a better default behavior like showing the full time-period would be so much better for the user)2. I had to add a -10 offset to get the humidity readings 'correct'. (See 'pros' above)3. Air pressure is not displayed on the unit. That's OK really - just worth noting. You have to use the app for that.4. Response time is kinda slow for temperature. The fastest update rate is 1 per minute (configurable through the app). And the CO2 and humidity numbers retrieved seem to have a response time on the order of a few minutes - which is very good. But the temperature sensor must be mounted to the board/case because it takes on the order of an hour for it to settle to the new value when moved to a new location at a new temp.Summary: I got this on sale and at the 99 dollars I paid for it, it is amazing. It is also excellent at the full price. It is a real measurement instrument, unlike the old "Air quality monitor" box I had been using which drifted more than 300 ppm over an hour or two, so that it was nearly unusable. In contrast, this AIRBIRD NDIR-based sensor/unit is excellent. No regrets at all. I might even buy another one. (It's nice and portable, so I can take it to places I spend time in to gauge how good their air-exchange rates are :-) )
Top reviews from the United States
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Reviewed in the United States on March 4, 2024
Pros
1. The calibration from the factory appears very good. It measured 430 ppm or so both outside and near a fresh-air intake system I put together for house ventilation. I don't plan on doing any calibration of the unit myself. The value of this NDIR based system is that it should not need periodic cal like my old unit.
2. The values I get for my indoor CO2 are typically in the 600's, which is consistent with what I would expect for our house size, occupancy, and energy efficiency.
3. The unit responds well and reasonably quickly to increases in CO2 due to occupied closed rooms (or inside/outside air switching in car). And if I breath near it (don't breath on it!), I have seen it shoot up to 1500 and recover in a couple/few minutes. Exactly what it should do.
4. The screen is beautiful of course. And the case sits nicely anywhere you put it.
5. The other measurements (temperature, humidity, and air pressure) are good too. HOWEVER, the original cal on humidity seemed to be off by about +10% -- at least relative to two other sensors I trust. FORTUNATELY this was an easy fix through the app. You can just tell it to add or subtract an offset to bring it back to where it should be. Now it tracks the other units well.
Cons:
1. The app is generally nice, and works, but it is a bit unpolished. They should have their developers use the product more to catch things like this: It seems to re-download numbers from the unit all the time. This takes a fair amount of time once you've been using it for several weeks. Also, the scaling of the graphs defaults to just the last few measurements. You can pinch the screen on the phone to rescale it - but why should I have to do this every time? (Yeah - I can live with this considering how well the unit itself works. But a better default behavior like showing the full time-period would be so much better for the user)
2. I had to add a -10 offset to get the humidity readings 'correct'. (See 'pros' above)
3. Air pressure is not displayed on the unit. That's OK really - just worth noting. You have to use the app for that.
4. Response time is kinda slow for temperature. The fastest update rate is 1 per minute (configurable through the app). And the CO2 and humidity numbers retrieved seem to have a response time on the order of a few minutes - which is very good. But the temperature sensor must be mounted to the board/case because it takes on the order of an hour for it to settle to the new value when moved to a new location at a new temp.
Summary: I got this on sale and at the 99 dollars I paid for it, it is amazing. It is also excellent at the full price. It is a real measurement instrument, unlike the old "Air quality monitor" box I had been using which drifted more than 300 ppm over an hour or two, so that it was nearly unusable. In contrast, this AIRBIRD NDIR-based sensor/unit is excellent. No regrets at all. I might even buy another one. (It's nice and portable, so I can take it to places I spend time in to gauge how good their air-exchange rates are :-) )
Outstanding - much better than chemical based sensors
Reviewed in the United States on March 4, 2024
I bought this INKBIRD CO2 sensor because it uses the NDIR measurement technique, which should be much more accurate than an older sensor I had been using. The older unit seen in the photos uses a chemical method that is temperature sensitive and drifts in value tremendously. I have been using the INKBIRD now for a couple weeks and it does not appear to have any drift or accuracy issues. I love it.Reviewed in the United States on March 4, 2024
Pros
1. The calibration from the factory appears very good. It measured 430 ppm or so both outside and near a fresh-air intake system I put together for house ventilation. I don't plan on doing any calibration of the unit myself. The value of this NDIR based system is that it should not need periodic cal like my old unit.
2. The values I get for my indoor CO2 are typically in the 600's, which is consistent with what I would expect for our house size, occupancy, and energy efficiency.
3. The unit responds well and reasonably quickly to increases in CO2 due to occupied closed rooms (or inside/outside air switching in car). And if I breath near it (don't breath on it!), I have seen it shoot up to 1500 and recover in a couple/few minutes. Exactly what it should do.
4. The screen is beautiful of course. And the case sits nicely anywhere you put it.
5. The other measurements (temperature, humidity, and air pressure) are good too. HOWEVER, the original cal on humidity seemed to be off by about +10% -- at least relative to two other sensors I trust. FORTUNATELY this was an easy fix through the app. You can just tell it to add or subtract an offset to bring it back to where it should be. Now it tracks the other units well.
Cons:
1. The app is generally nice, and works, but it is a bit unpolished. They should have their developers use the product more to catch things like this: It seems to re-download numbers from the unit all the time. This takes a fair amount of time once you've been using it for several weeks. Also, the scaling of the graphs defaults to just the last few measurements. You can pinch the screen on the phone to rescale it - but why should I have to do this every time? (Yeah - I can live with this considering how well the unit itself works. But a better default behavior like showing the full time-period would be so much better for the user)
2. I had to add a -10 offset to get the humidity readings 'correct'. (See 'pros' above)
3. Air pressure is not displayed on the unit. That's OK really - just worth noting. You have to use the app for that.
4. Response time is kinda slow for temperature. The fastest update rate is 1 per minute (configurable through the app). And the CO2 and humidity numbers retrieved seem to have a response time on the order of a few minutes - which is very good. But the temperature sensor must be mounted to the board/case because it takes on the order of an hour for it to settle to the new value when moved to a new location at a new temp.
Summary: I got this on sale and at the 99 dollars I paid for it, it is amazing. It is also excellent at the full price. It is a real measurement instrument, unlike the old "Air quality monitor" box I had been using which drifted more than 300 ppm over an hour or two, so that it was nearly unusable. In contrast, this AIRBIRD NDIR-based sensor/unit is excellent. No regrets at all. I might even buy another one. (It's nice and portable, so I can take it to places I spend time in to gauge how good their air-exchange rates are :-) )
Images in this review
Reviewed in the United States on March 17, 2024
This air monitoring device is perfect! It came in heavy and sturdy packaging. Directions were simple and easy to follow. Many help resources are included.
I found this item to be very accurate, you can watch the fluctuations. This is important to my home because we burn coal so there is always a worry. The humidity levels are very responsive, if I take a shower off that bedroom area I can see the levels increase.
The screen is very clear, I love simple and to the point!
My favorite idea on this item is the notification screen you get on your phone. Happy, sad , and bad news (see pic) its pretty foolproof where you are on air quality!
Bluetooth
Ease of use
Accuracy is on
Alert screens simple
Easy to connect
Cons:
Not wifi
Recommend product based on simplicity, quality and accuracy. Great seller and support.
I found this item to be very accurate, you can watch the fluctuations. This is important to my home because we burn coal so there is always a worry. The humidity levels are very responsive, if I take a shower off that bedroom area I can see the levels increase.
The screen is very clear, I love simple and to the point!
My favorite idea on this item is the notification screen you get on your phone. Happy, sad , and bad news (see pic) its pretty foolproof where you are on air quality!
Bluetooth
Ease of use
Accuracy is on
Alert screens simple
Easy to connect
Cons:
Not wifi
Recommend product based on simplicity, quality and accuracy. Great seller and support.
Images in this review
Reviewed in the United States on March 12, 2024
I have been using this meter for about a week and it does everything I need. I also have an Arnet4 but when looking for a second CO2/Temp/Humidity meter, I decided to go with the INKBIRD. At the time it was about $60 dollars cheaper and I decided to save a bit of money.
As you can see in the pictures, they do not report identical CO2 readings, but in general track each other. For almost all usages they are close enough to detect air quality. Overall, the product and app are not as polished and refined as the Arnet4, but based on the savings it was worth it for me. It is perfect for my mini greenhouse to monitor CO2, temperature and humidity when I am not there so I can make any adjustments for the following day.
Pro's:
-Lower price with similar features as other products
-Continuous air quality bar at the bottom versus only 3 levels on other products
-Easy to connect to the app
-Accurate CO2, temperature and humidity readings.
-So far battery life seems fine to me (will update as time goes on if there are any issues)
Con's
-I had to create an INKBIRD user account to use the app. I would prefer the option to work locally without an account. Plus the plots are not as polished and easy navigate as other products.
-Firmware version button on the app does not work or do anything.
Despite a few con's, its still a 5 star product for the price and does exactly what I need at a lower price point. I am sure over time they will continue to improve the app.
As you can see in the pictures, they do not report identical CO2 readings, but in general track each other. For almost all usages they are close enough to detect air quality. Overall, the product and app are not as polished and refined as the Arnet4, but based on the savings it was worth it for me. It is perfect for my mini greenhouse to monitor CO2, temperature and humidity when I am not there so I can make any adjustments for the following day.
Pro's:
-Lower price with similar features as other products
-Continuous air quality bar at the bottom versus only 3 levels on other products
-Easy to connect to the app
-Accurate CO2, temperature and humidity readings.
-So far battery life seems fine to me (will update as time goes on if there are any issues)
Con's
-I had to create an INKBIRD user account to use the app. I would prefer the option to work locally without an account. Plus the plots are not as polished and easy navigate as other products.
-Firmware version button on the app does not work or do anything.
Despite a few con's, its still a 5 star product for the price and does exactly what I need at a lower price point. I am sure over time they will continue to improve the app.
Images in this review
Reviewed in the United States on February 27, 2024
I love that you can also monitor temperature, humidity, and pressure. You can also set the intervals at which samples are taken (between 1, 2, 5, or 10 minutes). The only communication available between the app and the device is Bluetooth which means you can't monitor if you are out of range but the history is save in the device and transmitted to the app whenever you connect again. I've only used this for a couple of days but am really happy with it.
The interface is user-friendly. It's got default parameters with good (happy face), normal (straight face), bad (sad face) thresholds but the user can also set their own. The same with alerts. Let's say you don't want your humidity to pass a certain percentage, the meter will sound a buzzer. The app can also be set to display alerts and give alarms when within the Bluetooth reach.
Easy connection to app, accurate readings, and beautiful display
Reviewed in the United States on February 27, 2024
I needed a CO2 sensor as I decided to try using supplying CO2 to my plants to help photosynthesis along so I purchased this. The shipment was received super quick and the packaging from the manufacturer is excellent. My first impression was how easy to read and well-designed the display and the instrument is. I installed the app on my phone and paired the meter quickly and without issue.Reviewed in the United States on February 27, 2024
I love that you can also monitor temperature, humidity, and pressure. You can also set the intervals at which samples are taken (between 1, 2, 5, or 10 minutes). The only communication available between the app and the device is Bluetooth which means you can't monitor if you are out of range but the history is save in the device and transmitted to the app whenever you connect again. I've only used this for a couple of days but am really happy with it.
The interface is user-friendly. It's got default parameters with good (happy face), normal (straight face), bad (sad face) thresholds but the user can also set their own. The same with alerts. Let's say you don't want your humidity to pass a certain percentage, the meter will sound a buzzer. The app can also be set to display alerts and give alarms when within the Bluetooth reach.
Images in this review
