Specifications
| Manufacturer | INKBIRD |
| Model | CO2 Monitor (IAM-T1) |
| Dimensions (inches / cm) | 2.95 x 3.1 x 1.2 inches (7.5 x 8 x 3 cm) |
| Weight (pounds / kg) | 0.3 lb (0.14 kg) |
| Measurements | CO2, Temperature, Humidity, and Atmospheric Pressure |
| Usage | Indoor |
| Sensors | Senseair NDIR |
| Measured Pollutants (rating) Measured Pollutants – Score Summary: 8.5 - Average Score (13 monitors) 9.4 - Best Score (2 monitors) 5.1 - Worst Score (1 monitors) This rating summarizes how capable the sensor suite is — including what it measures (PM2.5, CO2, etc.), usable ranges, responsiveness, and overall stability. | |
| PM2.5 Range | - |
| PM2.5 Accuracy | - |
| CO2 Range | 0-9999 ppm |
| CO2 Accuracy | ± (30 ppm + 3% of reading) |
| Accuracy (rating) Accuracy – Score Summary: 8.9 - Average Score (13 monitors) 9.5 - Best Score (1 monitors) 5.6 - Worst Score (1 monitors) This rating reflects how closely the monitor’s readings track a trusted reference device across different conditions and pollutant levels. | |
| Connectivity | Bluetooth (Smart App) |
| Power Source | Battery (up to 4 years) |
| Other Features | Auto Calibration CO2 Alarm |
| Warranty | 1-year |
Full Review
The INKBIRD CO2 Monitor IAM-T1 is a 4-in-1 indoor air quality monitor, whose main purpose is to monitor current CO2 levels in your home.
It uses a Swedish-made Senseair NDIR sensor, which is one of the highest quality sensors available, works with the smart app, and is overall a pretty good-looking device.
I tested it for some time, compared its readings with those of other CO2 sensors I tested, and below I will present the test results and my review of this small monitor.
Sensor Types & Accuracy
The INKBIRD CO2 monitor uses a Swedish-made Senseair NDIR sensor, which is the primary sensor in this device and is responsible for measuring CO2 concentration. According to the manufacturer, this sensor can last up to 15 years.
This monitor measures CO2 in a range between 0–9999 ppm, with an impressive accuracy of ±(30 ppm +3% of the reading).
This is very high accuracy, significantly better than competing devices.
For example, the SwitchBot CO2 monitor is in a similar price range but still offers slightly lower accuracy than INKBIRD.
The INKBIRD CO2 monitor allows you to set the frequency of CO2 measurements to every 1 min, 2 min, 5 min, and 10 min. This setting can only be changed through the smart app.
In addition to CO2, this monitor also measures temperature, humidity, and atmospheric pressure. However, I couldn’t find information on which exact sensor is responsible for these measurements.
Still, since Senseair offers many models that, in addition to CO2, also measure these parameters, I assume it’s responsible for all measurements.
The INKBIRD measures temperature in a range between 0 and 50°C, with an accuracy of ±0.3°C.
In addition, it measures humidity from 0–85% and atmospheric pressure from 600 to 1100 hPa.
Some other air quality monitors I tested, for example, the Qingping Gen 2, have many more features and measure more parameters, but at only a slightly higher price than the INKBIRD.
Overall, although the primary purpose of this device is to act as a CO2 alarm/monitor, it also measures several other values that can be useful in everyday use.
Measured Data Reporting
When it comes to displaying measured data, the INKBIRD CO2 monitor offers two options: an ink screen and a smart app.
Whichever method you choose, you’ll get all the essential information, but the app provides a much more detailed view and access to some advanced features.
Personally, I prefer using the smart app to read the data, especially for analyzing historical trends.
However, I have to admit that when I place the CO2 monitor on my desk, I tend to check it very often and ventilate the room accordingly based on the readings.
Display
As I mentioned at the beginning, the INKBIRD CO2 monitor uses an ink screen that displays all the essential data captured by its sensors.
You’ll find information about the current CO2 concentration, temperature, and humidity, while atmospheric pressure can only be monitored through the smart app.
In addition to these, there are several other icons: one indicating whether the alarm is active, one showing if Bluetooth is enabled, and another indicating whether auto-calibration is turned on.
There is also a progress bar that visually represents the current CO2 level. For example, if the indicator is green, CO2 is below 1000 ppm; if it’s yellow, CO2 is between 1000 and 1400 ppm; and if it’s red, the CO2 concentration is above 1400 ppm.
As for displaying temperature in Celsius or Fahrenheit, you can switch between the two by pressing the button located under the battery cover.
A separate button under the cover also toggles Bluetooth on and off.
Smart App
The INKBIRD CO2 monitor connects to the INKBIRD smart app via Bluetooth 5.
The connection process is straightforward and involves just a few steps.
After you connect the device and your smartphone, you can access additional features, historical data, and settings, but only when you are near the device.
If you want to be able to read the data remotely, you would need to get an INKBIRD gateway.
As for the app, you will find a few different screens, but my favorite is the air quality history screen.
So, for anyone looking for CO2, temperature, humidity, or atmospheric pressure trends, this is a great feature.
Through the settings menu, you can change CO2 measurement intervals, activate calibration, change units, adjust alarm settings, and more.
Cleaning & Calibrating
Sensors like this one need proper calibration from time to time in order to provide accurate and reliable readings.
There are a few ways to calibrate the INKBIRD CO2 monitor, and each of these requires using the smart app.
After entering the Calibration menu in settings, you will find two options: you can either activate auto-calibration or perform a factory calibration reset.
I would recommend calibrating the device every time you notice a deviation in the CO2 monitor readings, and also if you haven’t done it in a while.
Also, if you keep your monitor in a space that never reaches fresh air levels (like a sealed grow tent or a poorly ventilated bedroom), you should turn off “Auto-Calibration” in the app.
Otherwise, the device will mistakenly treat the lowest CO2 level it detects as “400 ppm,” causing your readings to drift and become inaccurate.
Design & Build Quality
The INKBIRD CO2 is a small, modern, and well-built monitor. It’s built from high-quality plastic, is available in white, and has a small fabric panel on the front of the device.
It doesn’t have any physical buttons that are easily visible, but there are two buttons located under the back cover of the device. There are also slots for two AA batteries.
On the front, there is an ink screen, which is of good quality and easy to read.
At the back, there is also a wall-mount hole, which is ideal for people who want to attach the device to the wall.
All in all, the INKBIRD CO2 monitor has a clean, modern design that feels well put together for its size.
What comes with the device?
When you buy the INKBIRD CO2 monitor, you will get the device, 2x AA batteries, a user manual, and some other marketing materials.
FAQ on INKBIRD CO2 Monitor
Does it measure PM2.5 particulate matter?
Unfortunately, the INKBIRD CO2 monitor doesn’t measure PM2.5 particulate matter; its main purpose is to act as a CO2 monitor.
Could it work without batteries?
No, it couldn’t. The device runs on two AA batteries and can’t function without them.
Does it work without the smart app?
Yes, the INKBIRD CO2 monitor can work without connecting it to the smart app, but that isn’t something I would recommend, especially because by connecting it to the smart app, you unlock many advanced features as well as the ability to change the device’s settings.
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