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Gravity: PM2.5 Air Quality Sensor


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₹4,106.40 inc. GST
₹3,480.00 ex. GST
₹4,106.40 inc. GST
₹3,480.00 ex. GST


Air quality is becoming increasingly important as we become more aware of the impact of pollutants on our health. DFRobot's Air Quality Sensor can help you monitor the quality of the air you breathe by measuring particulate matter such as PM2.5, PM1.0, and PM10. The sensor has an easy-to-use Gravity interface and comes with sample code to help you quickly set up air quality monitoring projects.

Based on laser scattering technology, the PM2.5 air quality sensor uses a digital universal particle sensor to continuously measure the concentration of suspended particles of different sizes in the air and output the data via an I2C interface. It is suitable for use in a variety of settings, including smoking rooms, kitchens, hot springs, and bathrooms, and can be incorporated into instruments and equipment related to air quality improvement.

How does the sensor work?

The laser scattering principle is used by this sensor to measure the concentration of suspended particles in the air. When a laser is shone on the particles, it causes them to scatter, and the scattered light is collected at a certain angle. The microprocessor then uses this information, along with the MIE theory algorithm, to calculate the equivalent particle size and number of particles of different sizes per unit volume. This allows the sensor to provide accurate and timely data on the concentration of particulate matter in the air.

  • Laser scattering principle, accurate measurement
  • Zero false alarm rate
  • Real-time response and support continuous acquisition
  • Minimum recognizable particle size 0.3µm
  • Six-sided all-round shielding, stronger anti-interference
  • Ultra-thin design, only 12mm, suitable for portable devices
Package Contents
  • Gravity: PM2.5 Air Quality Sensor x1
  • Gravity-4P I2C/UART Sensor Cable x1

Technical Specifications

Working Voltage:
Maximum Working Current:
Standby Current:
< = 2mA
Data Interface Level:
L<0.8V, H>2.7V, maximum voltage level 3.3V
Particle Measurement Range:
0.3 ~ 1.0um; 1.0 ~ 2.5um; 2.5 ~ 10um
Particle Counting Efficiency:
50% @ 0.3um 98% @ >= 0.5um
Effective Range of Particle Mass Concentration (PM2.5 standard value):
Maximum Range of Particle Mass Concentration (PM2.5 standard value):
> = 1000ug/m3
Resolution of Particle Mass Concentration:
Consistency of Particle Mass Concentration (PM2.5 standard value):
1. ± 10% @100 ~ 500 ug/m3; 2. +-10 ug/m3@0 ~ 100 ug/m3
Standard Volume:
0.1 L
Single Response Time:
Comprehensive Response Time:
< = 10s
Working Temperature Range:
Working Humidity Range:
0~95%% (non-condensing)
Mean Time Between Failures:
> = 5 years
67 mm x 40 mm x 14 mm
Target Gas:
Air Quality

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.