Review of low-cost sensors for indoor air quality: Features and applications

Humans spend the majority of their time indoors, where they are potentially exposed to hazardous pollutants. Within this context, over past few years, there has been an upsurge low-cost sensors (LCS) for measurement indoor air pollutants, motivated both by recent technological advances and increased awareness quality (IAQ) its potential negative health impacts. Although not meeting performance requirements reference regulatory-equivalent monitoring LCS can provide informative measurements, offering opportunity high-resolution monitoring, emission source identification, exposure mitigation managing IAQ energy efficiency, among others. This article discusses strengths limitations that offer applications in field monitoring; it provides overview existing sensor technologies gives recommendations different applications, considering complex environment discussing future trends.