How does the Lindhaus Depur Air work 

DepurAir professional air purifier
STRENGTHS
It changes 190 m³/h of air (= room of about 70 m2)
Quiet: 46/49 db(A) based on the speed
LCD display with programming:
POWER ON/OFF, AUTOMATIC, 4 SPEEDS: NIGHT, V2, V3, V4
Laser analyzer PM2,5 (Optional on Battery)
Automatic adjustment based on the quantity of detected micro dust.
Air released into the environment after passing through the hepa filter H13
100% stainless steel
100% made in Italy by Lindhaus
Electric version for wall or table
Designed to be used in environments with presence of people: clinics, shops, offices, car showrooms, hairdressers, wellness centers, Hotels, Restaurants, etc…
Easy to install
24VDC version
DepurAir 24VDC version has the same characteristics but in addition:
24V input to be powered in means of transport with on board people: buses, trains, airplanes
Easy to install