Thanks! This is actually a 3 in 1 device. It's a ventilator, air cleaner and humidifier. It checks the air for polutants and humidity, and regulates it. I can see the info on the device and also on my phone. It's really fun to see the influence of some things. Like I open my door to the stairs, and someone has smoked on the stairs, the unit immediately detects these smoke particles, even thou it's standing in another room 10 meters from the door. So far I'm really happy with it. The real test will be closer to the summer, when there are a lot of pollen in the air. My eyes and nose get irritated when those are in the air. This device should be able to remove them.