How does a cheap Chinese meter hold up against the top-tier Swiss IQAir AirVisual air quality monitor? It’s a bit like Dacia vs Lexus. Dacia, meaning cheap and good enough (nothing to write home about, but gets the job done). Below you’ll find videos and a table with my rating of the Dienmern DM125 monitor.
In short: Dienmern is good enough for home use. For pro work, the measurement accuracy could be a bit better, but at this price for home use, it’s practically a steal. Further down the article is a table where
Below is a link to the Dienmern DM125 monitor purchased on AliExpress, where it’s exceptionally cheap even around 200 PLN! (compared to other platforms) For what this monitor delivers, it’s a bargain.
https://s.click.aliexpress.com/e/_Dl0Atdb
![](http://ae01.alicdn.com/kf/S4b3a8a768b9f4223a5da57b0f8866607S.jpg_140x140.jpg")
| Scale 1-10 | Comment – data | |
| Name | Dienmern DM125 | |
| Temperature measurement | 7 | Measurement resolution down to whole degrees |
| Humidity measurement | 9 | Reportedly +/-4% accuracy |
| CO2 carbon dioxide measurement | 10 | |
| PM2.5 particulate measurement | 5 | |
| Measurement visualization | ||
| User recommendations, meaning data analysis by the monitor | 6 | Recommendations are a bit unintuitive and based on “Asian” air quality standards |
| Manufacturer support | 2 | No manufacturer website, forum, only |
| Historical data | 4 |
Historical data can only be viewed on the monitor itself. It is a bit unintuitive |
| Remote access | 0(7) | Current versions feature Wi-Fi connectivity and Tuya app ) |
| Battery life | 9 | over 8 hrs on battery! At high brightness – a very good result |
| Noise | 5 | You can only hear the monitor’s fan in complete silence. There is a quiet humming. During the day it doesn’t bother you, but being up close, the hum might get annoying |
| Build quality Durability | 6 |
It’s fine, nothing crazy, built properly. Gives the impression of a reasonably solid piece of kit. A good Dacia among monitors 😉 |
| Power consumption | 8 | 2.5-3 W during battery charging and operation |
IQAir AirVisual pro air quality monitor review after 4 years
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