The PM2.5 Air Quality Kit combines a PMSA003 laser particulate sensor with an SHT20 temperature and humidity sensor in a single M5Stack-compatible module. It measures ambient particulate concentration, temperature, and humidity — making it ideal for air quality monitoring deployments.

The PMSA003 uses laser scattering to continuously measure suspended particle concentrations with a minimum resolution of 0.3 µm, outputting data via UART. The SHT20 provides fully calibrated digital temperature and humidity readings over I2C. The kit includes an M5Stack Basic core unit for a complete, ready-to-use monitoring system.

PMSA003 Specifications

• Method – Laser scattering
• Minimum Particle Size – 0.3 µm
• Output – Digital UART
• Response – Real-time, continuous acquisition
• Zero False Alarm Rate
• Body Height – 12mm (suitable for portable devices)

SHT20 Specifications

• Measurements – Temperature and humidity
• Output – Digital I2C
• Fully Calibrated
• Low Power Consumption

Kit Features

• Power – DC 5V via USB Type-C
• Compatibility – M5Stack stackable and extension system
• Pedestal – SPI/I2C/Power pin breakout with proto board

Ideal For

• Indoor and outdoor air quality monitoring
• Environmental sensor networks
• Citizen science air quality projects
• Smart home environmental monitoring

Package Contents

• 1× PM2.5 sensor base (PMSA003 + SHT20)
• 1× M5Stack Basic core
• 1× M5Core pedestal
• 1× USB Type-C cable
• 2× M3 screws

Resources

• Arduino example code (GitHub)
• Schematic (GitHub)
• PMSA003 datasheet (PDF)