The PurpleAir PA-II sensor is very reliable. Three years ago we deployed 25 sensors throughout our region and they are all still running strong with high confidence.
James Lucas
I ordered a sensor last year to get accurate air quality readings in my neighborhood. The sensor works GREAT, customer service is GREAT, and I have no complaints. Highly recommend this product and company.
Patty Thomas
Brilliant company, responsive to customers' needs. The sensors are an excellent product and are gaining many fans in New Zealand.
Have you ever seen smog linger over a city? Well, this can be caused by pollution that becomes trapped in the lowest level of the atmosphere, creating air quality and visibility problems. The common name for this mixture of pollutants is smog. But how does this pollution become trapped in the first place?
