Pros
High accuracy
Large measuring range
User friendly
Cons
May lack accuracy.
Tech specs
product dimensions | 2.76 x 2.17 x 8.27 inches 7.05 ounces |
batteries | 4 AA batteries required. |

Product Overview
I recently had the pleasure of trying out the Gain Express Air Quality Monitor Handheld CO2 Monitor. As someone who has tried out many different types of air quality monitors over the years, I was eager to see how this one compared.
First off, I was pleased with the accuracy of the device. It features a NDIR CO2 sensor which ensures readings are accurate within 0 2000ppm 50ppm or 5 of the reading . This means that you can trust the readings you take and make sure that your air quality is within acceptable levels. The device also has a large measuring range for CO2 0 9999ppm , temperature 14 140 , humidity 0.1 99.9 , dew point 20.0 59.9 C and wet bulb 5.0 59.9 C .
I was also thrilled with how easy it is to use this monitor. It features a portable handle design which makes it easy to carry around and take readings wherever you need to go. You can also manually calibrate it for both CO2 and humidity, so you don t need to worry about any complicated setup processes or constantly adjusting your settings as conditions change in the environment around you.

The device also comes with two power sources: either 4 AA batteries which are included or a 9V adaptor not included . This was really useful for me as I could power up my device quickly if I didn t have access to a plug socket, which meant I could keep taking readings wherever I went without having to worry about running out of power mid way through my journey!
Finally, I think this product would be ideal for anyone who needs to monitor indoor air quality in public places such as offices, classrooms, factories, hospitals and hotels, as it is so easy to use and provides very accurate results quickly and efficiently.
Overall, I am highly impressed with the Gain Express Air Quality Monitor Handheld CO2 Monitor and would happily recommend it to anyone looking for an accurate and reliable air quality monitor they can easily take on their travels!
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