Review on 🌡️ Coreel All-in-one Temperature Humidity Meter by Anthony Cornelius

Full Disclosure. I almost gave this product a bad review because it was falsely advertised as tracking PM2.5 particles. It obviously doesn't track allergens. However, after doing a little research into why CO2 is such an important indicator of air quality, I decided to give it a try anyway. After charging and turning on, CO2 levels exceeded 1,000ppm in my office and home gym. Although this number/value is indicated on the device in the middle area, it is actually too high. Recent studies have shown that C02 limits are at 400ppm (ideal, ambient air), 600ppm (too high for full focus and focus) and >1000ppm (not good for productive work). Since using this product I have started opening windows and leaving my forced ventilation/HVAC in the "always on" position to circulate the air. Tip: The battery needs to be charged every 12 hours, so just leave the USB charger plugged in at all times. I think the manufacturer should ensure their displays don't mention PM2.5 (probably an unintentional mistake) and future changes should show that 600ppm is already moderately high. This allows them to adjust the color-coding intervals according to the latest findings. It also includes temperature and humidity, which I don't use. But it's good that he is.