Review on 🌬️ BRWISSEN Particulate TVOC HCHO Formaldehyde: Advanced Air Quality Monitor for a Safer Environment by Lonnie Batch

possibility of free return. The first thing that struck me was the brightness and clarity of the screen. It's very legible and the color coding is really nice when viewed from across the room. I followed the calibration instructions carefully and it immediately alerted me to particles in the air in my apartment. I bought a new air purifier and after a short use the monitor showed that the particle level was almost zero. Luckily, this showed me that the monitor worked just as well as a brand new air purifier. I recently used the monitor to detect a refrigerant leak on my refrigerator. The refrigerant is a colorless, odorless gas, 3 microns in size, containing volatile organic compounds. it can make you very sick. The only feature I found annoying and unnecessary in my settings is the high volume warning tone. Every time I cooked something, the VOC levels went up and the monitor went off the alarm. Disabling is very easy and now I just rely on the color coding. Overall I'm very happy with the device and glad I took the risk. All the best.