SKU: SENS-0308
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DSM501A PM2.5 Dust Sensor Module for Arduino & Air-Conditioners - Analog Output

₹582.00 (Inclusive of all taxes)
Out of Stock

The DSM501A is a compact PM2.5 dust sensor module designed for 5V systems like Arduino, providing analog output for monitoring airborne particulate matter larger than 1 micron, including dust, pollen, and tobacco smoke, making it suitable for air quality monitoring in HVAC and consumer electronics.

Features

  • Optical sensing principle detects particles ≥1.0 micron (dust, pollen, smoke).
  • Analog output signal (Vout) varies with Particle concentration (clean air ~4V).
  • Single 5V DC power supply with integrated airflow generator for passive sampling.
  • Compact, lightweight plastic and aluminum housing for easy integration.
  • Specified for -10°C to +65°C operation in air purifiers and monitoring instruments.

Out of stock

Description

The DSM501A PM2.5 dust sensor operates on a light scattering principle, where an internal optical system detects the concentration of suspended particles larger than 1 micron in the sampled air. The module includes a built-in airflow generator to draw external atmosphere across the sensing chamber, ensuring consistent sampling for accurate relative Particle density measurement.

Designed for integration into 5V logic systems such as Arduino development boards and industrial air-handling units, the sensor outputs a variable analog voltage signal proportional to particulate concentration. This signal can be directly read by a microcontroller’s ADC pin for real-time air quality assessment, enabling control logic for purifiers or data logging in monitoring stations.

Key Features

  • Optical Particle Detection: Utilizes light scattering to sense particulate matter ≥1.0 micron, including fine dust and smoke.
  • Analog Voltage Output: Provides a direct 0-5V analog signal (Vout) for simple interfacing with microcontroller ADCs.
  • Integrated Sampling System: Built-in airflow generator ensures passive atmospheric sampling without external fans.
  • Wide Operating Range: Functions reliably in environments from -10°C to +65°C.
  • Compact & Lightweight Build: Durable plastic and aluminum housing offers a high-value, space-optimized design.
  • Single 5V Supply Operation: Simplified power requirements (max 90mA current draw) for easy integration.

Applications

  • Air Purifier & Cleaner Control: Integrating feedback for automatic fan speed adjustment based on real-time particulate levels.
  • HVAC & Air-Conditioning Air Quality Monitoring: Monitoring filter efficiency and indoor air quality in commercial and residential systems.
  • Portable Air Quality Instruments: Serving as the sensing core for handheld or wall-mounted PM2.5 monitors and data loggers.
  • Smart Home Environmental Systems: Providing particulate data to home automation hubs for health and comfort alerts.

Technical Specifications

ParameterSpecification
Model NumberDSM501A
Sensor TypeOptical Dust / Particulate Matter Sensor
Operating Voltage5V DC
Supply Voltage Range-0.3V to +7V
Max Operating Current90mA
Output SignalAnalog Voltage (Vout)
Detectable Particle Size≥1.0 micron
Particle Concentration RangeUp to 15,000 pcs / 283ml (for 1µm particles)
Operating Temperature-10°C to +65°C
Storage Temperature-20°C to +80°C
Dimensions (L x W)59mm x 45mm
Weight25g
Cable Length18cm

Frequently Asked Questions

What is the output signal type of the DSM501A sensor, and how do I interface it with an Arduino?

The DSM501A provides an analog voltage output (Vout). Connect the sensor's Vout pin to any analog input pin (e.g., A0) on your Arduino. In clean air, the output will be near 4V, and the voltage will decrease as particulate concentration increases. Use the `analogRead()` function to read the value and map it to a concentration level.

What is the operating voltage range, and can I power it directly from an Arduino's 5V pin?

The module requires a stable 5V DC supply and has an absolute maximum voltage range of -0.3V to +7V. You can power it directly from the Arduino's 5V pin, but ensure your power source can supply up to 90mA peak current. For stable operation, avoid using a shared power bus under high load.

What size of particles can this sensor detect, and what are its typical applications?

This sensor detects airborne particles with a diameter of 1.0 micron and larger, which includes fine dust, pollen, and tobacco smoke. Its primary applications are in consumer and commercial air quality monitoring, such as inside air purifiers, HVAC systems, and standalone air quality instruments for feedback control and data logging.

Does the sensor require calibration, and how is the airflow managed?

The sensor does not require user calibration for basic relative concentration measurements. It features a built-in airflow generator (a thermal convection system) that passively draws air through the sensing chamber. For accurate readings, ensure the module is mounted in a location with representative air circulation, avoiding dead zones.

Package Includes

  • 1 x DSM501A PM2.5 Dust Sensor Module
  • 1 x Connecting Cable (18cm)

Additional Information

Weight 0.025 kg
Dimensions 5.9 × 4.5 cm