View Plus is our most comprehensive, radon & air quality monitor with 7 sensors including radon, PM 2.5, CO2, and more - WiFi connected and cable-free. Monitor the air in the rooms that matter most - where you spend the most time at home. Place one in the family room and the other in the main bedroom. Or one in the baby's room and the other in your home office. Wherever you use your View Plus monitors, you'll get full visibility into the air quality and the power to improve the air your family breathes.