This sensor uses laser scattering to radiate suspending particles in the air, then collects scattering light to obtain the curve of scattering light change with time. The microprocessor calculates equivalent particle diameter and the number of particles with different diameters per unit volume.

The I2C data stream updates once per second, you'll get:

• PM1.0, PM2.5 and PM10.0 concentration in both standard & environmental units
• Particulate matter per 0.1L air, categorized into 0.3um, 0.5um, 1.0um, 2.5um, 5.0um and 10um size bins

As well as checksum, in binary format.

Each order comes with one fully assembled sensor module breakout, including some header if you'd like to solder it to a breadboard. The breakout board has a 5V mini boost circuit so you can power it from 3.3V and 5V and the motor will run just fine

Lastly, it wouldn't be an Adafruit breakout if it didn't come with libraries for Arduino and CircuitPython or Python that will read and checksum data, and print it out in human-readable format.

Sensor module specifications:

• Particle Range of measurement: 0.3~1.0,1.0~2.5, 2.5~10 Micrometer
• Particle Counting Efficiency: 50% @ 0.3μm 98% @ >=0.5 μ m
• Particle Effective Range (PM2.5 standard): 0~500 μ g/m ³
• Particle Maximum Range (PM2.5 standard):  ≥ 1000 μ g/m ³
• Particle Resolution: 1 μ g/m ³
• Particle Maximum Consistency Error (PM2.5 standard): ± 10% @ 100~500 μ g/m ³
  ±10 μ g/m ³ @0~100 μ g/m ³
• Particle Standard Volume 0.1 Liter
• Single Response Time ＜1 second
• Total Response Time ≤ 10 seconds
• DC Power Supply Typ: 5.0V Min: 4.5V Max: 5.5V
• Active Current ≤ 100 mA
• Standby Current ≤ 200 μ A
• Interface Level: 3.3V logic, L <0.8V,  H >2.7V
• Working Temperature Range -10 ~ 60 ℃
• Working Humidity Range 0~99%
• Storage Temperature Range -40 ~ 80 ℃
• MTTF ≥ 3 Year
• I2C address 0x12 (cannot be changed)

Product Dimensions: 51.0mm x 35.5mm x 13.6mm / 2.0" x 1.4" x 0.5"

Product Weight: 28.0g / 1.0oz