PMS7003 High-Precision Digital Laser Dust Particle Counter PM2.5 Sensor Module

Track air quality with the industry-grade PMS7003 Digital Laser Dust Particle Sensor Module. Utilizing advanced laser scattering technology, this ultra-compact sensor counts suspended particulate matter down to 0.3 microns in real-time. It delivers accurate, simultaneous digital readouts for PM1.0, PM2.5, and PM10 concentrations directly over a standard UART serial interface. Complete with an integrated dual-pass miniature fan and a slim 12-pin ribbon cable assembly, it is the premier choice for professional air purifiers, outdoor weather monitoring stations, portable air quality meters, and smart home HVAC systems.

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Tags PMS7003 Sensor Laser Dust Sensor PM2.5 Particle Counter Digital Air Quality Sensor PMS7003 Arduino Plantower Dust Sensor PM10 Sensor Module UART Laser PM2.5 Air Purifier Sensor

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Product Details :

Detailed Description

The PMS7003 Digital Laser Dust Particle Sensor Module is a professional-grade, ultra-slim air quality sensor developed by Plantower to measure concentrations of suspended particulate matter. While older, low-cost optical dust sensors (like the sharp infrared variants) rely on simple thermal airflow convection and basic photodiodes—making them prone to severe calibration drift and inaccuracy—the PMS7003 uses advanced laser scattering principles. This provides highly precise, linear, and repeatable data that tracks matching laboratory-grade particulate monitoring instrumentation.

The module works by drawing a continuous stream of ambient air through its internal testing chamber using an integrated long-life miniature fan. Inside the chamber, a laser diode illuminates the incoming air stream. As suspended dust, smoke, pollen, or soot particles pass through the laser beam, they scatter the light in all directions. A high-speed photosensitive detector positioned at a specific angle captures this scattered light intensity.

An internal 32-bit ARM microprocessor processes the light signals in real-time, executing specialized Mie scattering algorithms to count individual particles and calculate their equivalent diameters. The module then outputs these concentration values in micrograms per cubic meter ( $mu ext{g/m}^3$ ) via a standard digital UART interface.

Key Features and Benefits

Advanced Laser Scattering Design: Delivers fast, highly accurate, and continuous particle measurements that easily outperform traditional infrared optical sensors.
Triple-Target PM Metrics: Monitors three critical air quality bands simultaneously, providing discrete digital outputs for PM1.0, PM2.5, and PM10.
Ultra-Fine 0.3 Micron Resolution: Capable of counting microscopic airborne particles as small as 0.3 microns, making it highly sensitive to fine industrial smoke and exhaust soot.
Ultra-Thin 12mm Footprint: Slim, low-profile enclosure easily integrates into space-constrained devices like wall-mounted smart thermostats and portable handheld air monitors.
Onboard Shielding & Airflow Enclosure: Fully enclosed in a metal casing that blocks ambient electromagnetic interference (EMI) and prevents external stray light from corrupting sensor readings.

Technical Specifications

Feature Component	Specification Details
Core Sensor Engine	Plantower PMS7003 (Laser Particulate Matter Sensor Series)
Measurement Parameters	PM1.0, PM2.5, PM10 Concentrations (μ $mu ext{g/m}^3$ )
Particle Detection Range	$0.3 mu ext{m} ext{ to } 10 mu ext{m}$ (Microns)
Counting Efficiency	$50% ext{@ } 0.3 mu ext{m}$ \| $$98% ext{@ } ge 0.5 mu ext{m$
Concentration Resolution	$1 mu ext{g/m}^3$ steps
Response & Sampling Time	$le 1 ext{ Second}$ continuous update sweeps
Operating Voltage Supply	$5.0 ext{V} pm 0.1 ext{V}$ DC (Powers internal laser and fan)
Logic Communication Level	$3.3 ext{V}$ TTL Serial (Requires level shift for 5V systems)
Active Working Current	$le 100 ext{ mA}$ during continuous sampling loops
Standby Sleep Current	$le 200 mu ext{A}$ via hardware sleep pin control
Interface Data Protocol	UART Serial ( $9600 ext{ bps}$ , 8 Data Bits, No Parity, 1 Stop Bit)

How to Configure & Wire

12-Pin Ribbon Cable Configuration:

The PMS7003 uses a fine-pitch 12-pin connector interface. For standard prototyping, focus on these five essential connection lines:

Pin 1 (VCC): Power supply input ( $+5 ext{V DC}$ ).
Pin 2 (GND): Common system ground reference.
Pin 3 (SET): Standby Control Pin. Pull high ( $3.3 ext{V}$ ) for normal operation; pull low to turn off the fan and laser, dropping the module into deep sleep mode.
Pin 4 (RX): UART Serial Receive line ( $3.3 ext{V}$ level logic).
Pin 5 (TX): UART Serial Transmit line ( $3.3 ext{V}$ level logic; pushes data packets every 1 second).

Quick Setup Prototyping Steps:

Connect VCC to 5V, GND to ground, and pull the SET pin up to 3.3V to turn on the sensor's internal fan.
Connect the sensor's TX pin to a hardware or software serial receive pin on your microcontroller (e.g., Arduino Pin 10 via SoftwareSerial).
Open your Arduino IDE, head to the Library Manager, search for "PMS" or "Plantower", and install the optimized PMS Library by Mariusz Kiaszewicz.
Flash the standard data stream example sketch. Open the Serial Monitor at 9600 bps to see real-time, active air quality metrics update every second:

PM 1.0 Concentration: 12 ug/m3
PM 2.5 Concentration: 24 ug/m3  <-- (Target Metric for Urban Smog)
PM 10  Concentration: 38 ug/m3

Applications

Smart Air Purifiers: Automatically scales up fan speeds in home air purifiers when localized PM2.5 or smoke concentrations spike.
IoT Weather Stations: Integrates into outdoor smart city grids to track and log ambient pollution, urban smog, and dust storm patterns.
Handheld Environmental Monitors: Powers portable, battery-operated air quality indexing (AQI) meters used for occupational safety checks.
HVAC Smart Ventilation Controls: Monitors incoming fresh air lines in modern office buildings, automatically closing external dampers during high outdoor pollution events.