Figure 1 from Wireless sensor network for real-time air pollution monitoring

Fig. 1. Air Quality Monitoring System Architecture. - "Wireless sensor network for real-time air pollution monitoring"

Design of a Low-Cost Air Quality Monitoring System Using Arduino and ThingSpeak

Frontiers Transformational IoT sensing for air pollution and thermal exposures

PM2.5 in Sri Lanka: Trend Analysis, Low-cost Sensor Correlations and Spatial Distribution - Aerosol and Air Quality Research

PDF) Design of Low Cost Real Time Indoor Environmental Air Pollution Measuring System Using ZigBee

A comprehensive review on indoor air quality monitoring systems for enhanced public health, Sustainable Environment Research

Achieving better indoor air quality with IoT systems for future buildings: Opportunities and challenges - ScienceDirect

Figure 2 from Wireless sensor network for real-time air pollution monitoring

Overview of Wireless Sensor Network

Development of Real-Time Sensing Network and Simulation on Air Pollution and Transport

Wireless sensor network for real-time air pollution monitoring

A smart sensor system for air quality monitoring and massive data collection

Design of a Low-Cost Air Quality Monitoring System Using Arduino and ThingSpeak

Sensors, Free Full-Text

Application of the low-cost sensing technology for indoor air quality monitoring: A review - ScienceDirect