Gravity: Laser PM2.5 Air Quality Sensor

SKU: SEN0177

The article delves into the Gravity: Laser PM2.5 Air Quality Sensor, explaining its role as a digital universal particle concentration sensor adept at measuring suspended particulate matter in the air, with a size range of 0.3 to 10 microns, and providing concentration data via a digital interface. It emphasizes the sensor's suitability for integration into various environmental instruments and its capability to deliver timely, accurate data crucial for air quality monitoring. The reader will understand its operational proficiency, including its ability to output detailed quality data for each particle, thereby serving as a key asset for enhancing environmental evaluations and ensuring improved air quality across diverse environments.

Angled shot of back of PM2.5 sensor module for Arduino with laser air quality detection.-DFRobot product sku:SEN0177 image.

Downloadable Resources

  • Docs
  • Tech Specs
  • Specification

    Parameter Value
    Operating voltage 4.95 ~ 5.05V
    Maximum electric current 120mA
    Measuring pm diameter 0.3-1.0, 1.0-2.5, 2.5-10(um)
    Measuring pm range 0~999 ug/m³
    Standby current ≤200 uA
    Response time ≤10 s
    Operating temperature range -20 ~ 50°C
    Operating humidity range 0 ~ 99% RH
    Maximum size 65 × 42 × 23 (mm)
    MTBF ≥ 5 years
    Features Quick response, Standard serial input word output, Second-order multi-point calibration curve, The minimum size of 0.3 micron resolution

    Power supply quality requirements:

    • Voltage ripple: less than 100mV.
    • The power supply voltage stability: 4.95 ~ 5.05V.
    • Power supply: more than 1W (5V@200mA).
    • The upper and lower electric voltage surge is less than 50% of the system power supply voltage.

    Pinout

    Sensor Pin Arduino Pin Function Description
    Pin 1 VCC Positive Power
    Pin 2 GND Negative Power
    Pin 3 SET Mode setting (More hereof later)
    Pin 4 RXD receive serial port pin (3.3V level)
    Pin 5 TXD Transferring serial port pin (3.3V level)
    Pin 6 RESET Reset
    Pin 7/ 8 NC NUll

    Pin Explanation:

    • SET: SET = 1, the module works in continuous sampling mode, it will upload the sample data after the end of each sampling. (The sampling response time is 1S); SET = 0, the module enters a low-power standby mode.
    • RESET: Leave it empty is OK.

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