DFRobot
Gravity: Laser PM2.5 Air Quality Sensor For Arduino
The Gravity Laser PM2.5 Air Quality Sensor uses laser scattering to measure suspended particulate matter concentrations in the air. It detects particles from...
The Gravity Laser PM2.5 Air Quality Sensor uses laser scattering to measure suspended particulate matter concentrations in the air. It detects particles from 0.3 to 10 µm in diameter and outputs digital concentration data via a serial interface — ideal for building air quality monitors, weather stations, and environmental sensing projects with Arduino.
The sensor provides real-time PM1.0, PM2.5, and PM10 concentration readings in µg/m³, with a response time under 10 seconds. It comes with an adapter board and cable for easy connection to Arduino and other microcontrollers.
Key Features
- Laser Scattering Detection – Accurate particulate matter measurement
- Three Size Ranges – Measures PM1.0 (0.3–1.0 µm), PM2.5 (1.0–2.5 µm), and PM10 (2.5–10 µm)
- Digital Output – Concentration and per-particle quality data via serial interface
- Fast Response – Under 10 seconds
- Low Standby Power – ≤200 µA in standby mode
- Long Lifespan – MTBF ≥5 years
Specifications
- Supply Voltage – 4.95–5.05 V
- Max Current – 120 mA
- Measuring Range – 0–1000 µg/m³
- Particle Size Range – 0.3–10 µm
- Response Time – ≤10 s
- Operating Temperature – –20 °C to 50 °C
- Operating Humidity – 0–99% RH
- Dimensions – 46 × 35 × 20 mm
Ideal For
- Indoor and outdoor air quality monitoring
- Environmental sensing and weather stations
- Smart home air purifier integration
- HVAC monitoring and control systems
Package Contents
- 1× PM2.5 Laser Dust Sensor
- 1× PM2.5 Sensor Adapter
- 1× Sensor Adapter Cable
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- Matter
- A smart home connectivity standard designed to let devices work across different ecosystems. It matters if you want a project to integrate more easily with platforms such as Apple Home, Google Home, or other Matter-compatible systems.
- particulate matter
- Particulate matter means tiny particles suspended in the air, such as dust, smoke, pollen, or pollution. A sensor that measures it is useful for air-quality projects because particle levels can affect comfort and health.
- PM1.0
- PM1.0 refers to airborne particles with a diameter of about 1 micrometre or smaller. This size category matters because smaller particles can stay airborne longer and may come from sources such as smoke or combustion.
- PM10
- PM10 refers to airborne particles with a diameter of about 10 micrometres or smaller. It includes larger dust and pollen-like particles, so it is useful for detecting coarser airborne pollution.
- PM2.5
- PM2.5 refers to airborne particles with a diameter of about 2.5 micrometres or smaller. It is a common air-quality measurement because these fine particles can be breathed deep into the lungs.
Find this product in
Brands
Supplier page — dfrobot.com
Supplier Description · 668.3 KB · Click any page to view full size
Resources & Downloads
Guides, code examples, and more
Related Tutorials
Free guides on learn.littlebird.com.au
