Review on 🌬️ Fellowes AeraMax 300 Large Room Air Purifier - Advanced Mold, Odor, Dust, Smoke, Allergen, and Germ Eliminator with True HEPA Filter and 4-Stage Purification, White by Drew Beckett

Good for air pollution control. However, I have two problems. The first problem, the air quality indicator on the device changes from green to yellow and red too quickly and too often, it really makes me wonder if my air quality is changing that quickly. I wonder if the sensor works well on this device. Finally, the device emits a very high-pitched whine. I don't know if it's just my device or all of them, but if you have sensitive hearing, keeping this in your bedroom will definitely keep you up at night. I can only use it in my living room where other sounds will mask the noise. Кроме того, когда устройство обнаруживает, что качество воздуха не очень хорошее, вентиляторы начинают дуть немного сильнее в желтом режиме, если оно обнаруживает, что качество воздуха действительно плохое, тогда вентиляторы включаются на максимальную мощность, что очень громко сказал, что определенно не позволит вам Sleep. Even on the lowest setting you still hear that high pitched howl that never stops and is very annoying. UPDATE: I noticed that the high pitched whistling sound is generated by the ionizer in the device. This feature can be disabled by pressing the blue star button on the front display (below). Hold until it turns off and then the howling stops.