Clean air is becoming scarce, leading to a rise in air purifier sales. However, excessive use of air purification can result in higher electric bills and noise pollution. To determine air quality, an air quality monitor is necessary, but most options on the market have downsides. The smart home device market can be shady, but companies like AirGradient with open source firmware and hardware are restoring faith. Delivery took seven days, assembly instructions were provided through a QR code, and the product arrived in good condition. The AirGradient Pro uses accurate and reliable sensors, outperforming sub $100 monitors. Overall, the author is satisfied with the AirGradient Pro and plans to order more.
https://bubelov.com/blog/2023/06/airgradient-pro-kit-review/