Airthings Wave Enhance Indoor Air Quality Monitor

What you are looking at is Airthings Wave Enhance Indoor Air Quality Monitor, a product. Between versions of the same thing, it is usually the details — capacity, finish, what is included — that separate them. Read the setup notes before first use; most early problems come from a step skipped at the start. Whether it is discounted this week says more about the shop's stock than about the product. Store it dry and out of direct sun, which is the simplest thing you can do for how long it lasts. Whoever is cheapest today may not be tomorrow, so it is worth looking again before settling on the best deal.