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The Octopus PM2.5 module from ElecFreaks is a laser-based particulate matter sensor built around the ZH03B dust sensor. It measures PM2.5 concentration in the air with high consistency and real-time response, capable of detecting particles as small as 0.3 µm in diameter.

Part of the Octopus electronic brick series, it features both a 3-pin GVS interface (PWM output) and a 4-pin serial output, making it compatible with micro:bit, Arduino, and other 3.3 V or 5 V microcontrollers.

Key Features

  • ZH03B Laser Dust Sensor – High-accuracy PM2.5 concentration measurement
  • 0.3 µm Minimum Particle Size – Detects fine particulate matter
  • Dual Output – 3-pin GVS (3.3 V PWM) and 4-pin serial (3.3 V UART)
  • 3.3 V / 5 V Compatible – Works with micro:bit, Arduino, and similar boards
  • Real-Time Response – Continuous air quality monitoring

Specifications

  • Sensor – ZH03B laser dust sensor
  • Measurement – PM2.5 concentration (µg/m³)
  • Minimum Particle Size – 0.3 µm
  • Interfaces – 3-pin GVS (PWM) and 4-pin serial (UART)
  • Operating Voltage – 3.3–5 V

Ideal For

  • Air quality monitoring stations
  • Environmental science projects with micro:bit
  • Indoor air quality sensing
  • Arduino and microcontroller pollution monitoring

Resources

The Octopus PM2.5 module appears in the following collections:

SKU EF-EF04090