The Portable Negative Air Machines are designed specifically for infection control. It prevents the spreading of contaminants and viruses such as the Corona Virus. It can be used almost anywhere, but mostly in Hospitals, medical facilities, and Biological laboratories. The ARDC-1502 maintains negative pressure in a hospital room that can accommodate 1~6 patients (max. 112 square m. based on -2.5Pa and 12ACH) Applications: 1) Protect medical workers of infectious diseases and viruses 2) Prevent airborne cross-contamination risk 3) Reinforce existing contamination treatment facility 4) Create a safer environment free of viruses and infections 5) Suitable for indoor and outdoor usage. Features: 6) Meets the high standard of CDC and KCDC (Korean Center for Disease Control and Prevention) 7) High-performance BLDC motor (semi-permanent): level control from 0-100 (8) Operates with positive and negative pressure