DFRobot Gravity PM2.5 Air Quality Sensor

The DFRobot Gravity PM2.5 Air Quality Sensor is a laser scattering particulate sensor that measures PM1.0, PM2.5 and PM10 concentrations.

The sensor is designed for accurate environmental monitoring. It uses a laser scattering principle to measure key particulate matter concentrations, including PM1.0, PM2.5 and PM10. Its Gravity interface is designed to integrate with a range of main-controllers and development boards, such as the Arduino UNO R3, making it suitable for educational projects and air quality monitoring systems.

Design and Performance

The sensor has a six-sided all-round shielding design that provides anti-interference capabilities, supporting stable readings in electrically noisy environments. It supports real-time response and continuous data acquisition, giving immediate feedback on changes in air quality. Its ultra-thin 12 mm profile makes it suitable for integration into portable devices and compact applications.

Key Specifications

• Measurement principle: Laser scattering
• Measured particulates: PM1.0, PM2.5 and PM10
• Minimum recognisable particle size: 0.3 µm
• Particle counting efficiency: 50% at 0.3 µm; 98% at ≥0.5 µm
• Operating voltage: 5.0 V DC
• Maximum working current: 100 mA
• Standby current: ≤2 mA
• Interface: Gravity-compatible 4-pin I2C/UART connection
• Product size: 67 mm x 40 mm x 14 mm
• Weight: 55 g

Supplied With

The sensor is supplied with a Gravity-4P I2C/UART sensor cable. It is suitable for smart home systems, educational science kits, environmental research stations and air quality monitoring systems.