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Air Quality Monitor (PM 2.5, Temperature & Humidity Sensor)

SKU: SEN0233

DFRobot’s SEN0233 Air Quality Monitor detects PM10, PM2.5, PM1.0, temperature, and humidity. Using laser scattering, it measures particle concentration (mass) and has a one-chip sensor for accurate temp/humidity. It outputs data via UART, works with Arduino/STM32, and integrates into air quality/environmental instruments for timely parameters.

Front of air quality sensor module with red wire-DFRobot product sku:SEN0233 image.
  • Docs
  • Tech Specs
    • 1. Example Code for Arduino Leonardo - Read Air Quality Data

    This example is to detect formaldehyde, PM2.5, temperature and humidity in the environment using Arduino Leonardo. It uses Leonardo HardwareSerial1 as communication port.
    2. Example Code for Arduino UNO - Read Air Quality Data via Software Serial

    This example is to detect formaldehyde, PM2.5, temperature and humidity in the environment using Arduino UNO. Software serial port is used here to communicate with the sensor because Arduino UNO has only one serial port and it's connected to USB.
    3. Example Code for Arduino UNO - Mind+ Graphical Programming

    This example uses Mind+ (Based on Scratch3.0) graphical programming to detect formaldehyde, PM2.5, temperature and humidity in the environment using Arduino UNO.
    4. Example Code for Arduino UNO - Air Quality Monitor with LCD

    This example is to detect formaldehyde, PM2.5, temperature and humidity in the environment using Arduino UNO and display the data on Gravity LCD1602 RGB Backlight Module.
    Reference

    Specification

    Parameter Value
    Operating Voltage 5.0VDC
    Maximum Operating Current 100 mA
    Standby Current ≤200 uA
    Data Interface Level L<0.8V, H>2.7V, Max 3.3V
    Particle Range of Measurement 0.3~1.0μm; 1.0~2.5μm; 2.5~10μm
    Particle Counting Efficiency 50%@0.3μm 98%@>=0.5μm
    Particle Effective Range (PM2.5 standard) 0~500μg/m³
    Particle Maximum Range (PM2.5 standard) 0~2000ug/m³
    Particle Resolution 1ug/m³
    Particle Maximum Consistency Error (PM2.5 standard data) ±10%@100~500μg/m³; ±10μg/m³@0~100μg/m³
    Standard Volume 0.1 L
    Temperature Measuring Range 0~99 ℃
    Temperature Measuring Resolution 0.1 ℃
    Temperature Measuring Accuracy ±0.5 ℃
    Humidity Measuring Range 0~99%
    Humidity Measuring Resolution 0.1%
    Humidity Measuring Accuracy ±2%
    Single Response Time ≤1s
    Total Response Time ≤10s
    Serial Baud Rate 9600bps
    Operating Temperature Range -10~+50℃
    Storage Temperature Range -40~+80℃
    Operating Humidity Range 0~99%
    MTTF ≥ 3 years
    Dimensions 50x38x21mm/1.97x1.50x0.83"

    Pinout

    SEN0233 Air Quality Monitor (PM 2.5, Formaldehyde, Temperature & Humidity Sensor) Board Overview
    Num Label Description
    PIN1 VCC + (+5V)
    PIN2 GND -
    PIN3 SET Set pin/TTL level @3.3V, high level or suspending is normal working status, while low level is sleeping mode.
    PIN4 RXD Serial port receiving pin/TTL level @3.3V
    PIN5 TXD Serial port transmitting pin/TTL level @3.3V
    PIN6 RESET Module reset signal /TTL level @3.3V, low reset
    PIN7 NC
    PIN8 NC

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