They incorporate state of the art Japanese Laser technology to SEE the particles in the air being drawn into the unit which is constantly monitored, the information clearly displayed on the front. Using our COLOURVIEW™ Technology. Air-X-Pro 1200 Air Purifier WIFI Enabled Alexa and Google Compatible Controllability is so intuitive as well, with a remote handset, touch panel, WiFi APP and even Voice Control through Alexa and Google devices. Using the WiFi APP it is possible to monitor and control multiple devices in several buildings with ease, perfect for building management using hundreds of systems. We are currently having a special H1N1 (Swine Flu) test carried out, tBacterial tests have been completed and have passed 99.9% already, virus testing is actually very similar. So, if you want to talk about AIR PURITY, think only Air X Pro, which can truly give you A Breath of Fresh Air. Model AXP-1600 Size 1413 x 430 x 127mm LASER Particulate matter sensor APP Intelligent Control Tuya Smart APP PM2.5 Display Digital filter countdown display Reciprocal 1500hrs (6 Months @ 8 Hours Per Day, or 2 Months continuous use) Power 110W Power Supply 110-240V/50-60Hz Clean Air Delivery Rate 647cfm/1100(m3/h) PM2.5 Removal Rate – 1h 99.90% Negative ion release 24 Million per Second Intelligent mode Sleep mode Child lock Timing function 1/2/4/8hrs Fan speeds 4 Room Area Covered 240M²