FengSensor is an indoor environmental quality monitoring device, by which you can check your indoor temperature, humidity, illumination, noise level, carbon dioxide concentration, formaldehyde concentration and fine particulate matter(PM2.5) concentration, etc. With the matching FengSensor application, you can easily examine the IEQ performance by managing your account and device, configuring network, viewing data of recent one hour/ last day/ last week, and receiving feedback of indoor and outdoor environmental conditions as well as effective response plan. This application is your healthy housekeeper anytime and anywhere.