The Beauty (and Brains!) of Our Particulate Matter Sensor

We get a lot of questions about how our air purifiers work, or more specifically, how they sense poor air quality. The answer is PMS. (No, not that kind of PMS.) We’re talking about particulate matter sensors. Particulate matter sensors aren’t the most exciting things we can talk about, but they’re an essential part of our Large Room Air Purifier’s function.

What is a Particulate Matter Sensor?

Simply put, it detects little particles in the air that can be bad for you. The technical term is “particulate matter” and it ranges in sizes from being large enough to see with the naked eye to small enough to inhale without knowing it. An example of particulate matter is pollen or dust. When inhaled in large concentrations, it may drive your sinuses crazy, or worse. 

Particulate matter is generally grouped into two categories. The first is particles smaller than 2.5 microns and the second is particles smaller than 10 microns. (For reference, a grain of sand is around 90 microns in diameter.)

How Does a Particulate Matter Sensor Work?

Without getting too deep into the weeds explaining this technology, essentially the sensor takes a reading of the air in the room it’s placed in. It then looks for higher-than-normal amounts of allergens, chemicals, smoke, and other irritants in the air.

In our Large Room Air Purifier, if the sensor indicates the air is clean, the air purifier will continue to operate as normal on the lowest setting. If the sensor indicates that the air has an increased concentration of pollutants (a.k.a. you burned something in the oven, your dog brought his new friend home) it'll increase its fan speed to remove whatever’s in the air. The light rings on the air purifier indicate at what level the air purifier is working to remove gunk from the air.

Large Room Air Purifier Light Ring Indicators

A visual indicator works well when you’re too busy to read a sensor, and let’s be real - most people aren’t interested enough to read one. So we designed ours to function visually, meaning each light ring color indicates something different. White light means that the air is clean. Blue light means it senses pollution that shouldn’t be there and is increasing its fan speed. Purple means it's working hard to remove the irritant. Pink indicates that the air pollution is at its worst and the fan speed is at its highest.

Discover Your Home’s Air Quality

The particulate matter sensor in our Large Room Air Purifier can tell you all about the air quality in your home. Whether you’ve been painting your living room all day, or a construction crew has set up for a reno next door, it senses everything. The True HEPA Filter and Activated Carbon Pre-filter lock in all those pollutants so all you breathe in is clean, healthy air. A small sensor does a big job and we think you’ll be as impressed as we are.


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