DSM501A PM2.5 Dust Sensor Module – Air Quality Monitor
₹560.50 incl. GST (₹475.00 + GST)
The DSM501A PM2.5 Dust Sensor Module detects fine airborne particles as small as 1 micron, including smoke, dust, pollen, and mites. It uses a built-in heater for silent thermal airflow and provides a PWM output for easy microcontroller interfacing. Operating at 5V DC, it is ideal for air quality monitors, air purifiers, HVAC systems, Arduino projects, and DIY environmental monitoring.
DSM501A PM2.5 Dust Sensor Module
Product Description
The DSM501A PM2.5 Dust Sensor Module is a compact particle detection sensor designed to detect fine airborne particles as small as 1 micron, including smoke, pollen, house dust, and mites. It is suitable for air quality monitoring, smart air purifiers, HVAC systems, environmental sensing, and DIY projects.
The sensor uses a built-in heater-based thermal airflow system to naturally draw air into the sensing chamber without requiring an external fan. This provides quiet operation and makes the module easy to integrate into compact air-monitoring systems.
Thermal Airflow Detection
The DSM501A uses an internal heater to warm the surrounding air and create a natural upward convection flow. This airflow carries airborne particles through the sensing chamber, where the sensor detects their presence.
This design eliminates the need for an external fan and provides a simple, low-maintenance solution for particle detection.
Easy Microcontroller Interface
The sensor operates from a 5V DC supply and provides a PWM output based on low pulse occupancy time. This allows microcontrollers such as Arduino and other compatible systems to process the sensor signal and estimate particle concentration.
Key Features
- Detects particles as small as 1 micron
- Suitable for PM2.5/PM10-range particle detection
- Built-in heater for thermal airflow
- Silent operation without an external fan
- PWM low-pulse-occupancy output
- Adjustable sensitivity
- 5V DC operation
- Compact and lightweight design
- Suitable for Arduino and embedded projects
- Ideal for air quality monitoring
Technical Specifications
| Feature | Specification |
|---|---|
| Model | DSM501A (Compatible with DSM501B) |
| Supply Voltage | 5V DC |
| Output Signal | PWM (Low Pulse Occupancy) |
| Minimum Particle Size | 1 Micron |
| Detectable Targets | Smoke, House Dust, Pollen, Mites |
| Warm-Up Time | ~1–3 Minutes |
| Working Current | <90mA |
| Interface | 5-Pin Connector |
| Connector Pins | VCC, GND, Vout1, Vout2, Control |
Typical Application Scenarios
Smart Air Purifiers
Can be used to detect airborne particles and control an air purifier or ventilation fan automatically.
Air Quality Monitors
Suitable for DIY indoor air quality monitoring systems with displays or data logging.
HVAC Systems
Can be integrated into ventilation systems that respond to changes in airborne dust or smoke levels.
Environmental Monitoring
Useful for experimental and educational projects involving airborne particle detection.
Applications
- PM2.5 monitoring
- Air quality monitors
- Smart air purifiers
- HVAC systems
- Dust detection
- Smoke detection
- Environmental monitoring
- Arduino projects
- DIY air quality systems
- Educational electronics
- Embedded sensing systems
- Portable air monitors
Package Includes
- 1 × DSM501A PM2.5 Dust Sensor Module
- 1 × Connecting Cable
Product Disclaimer
Product information provided on our website may not be entirely accurate as specifications can vary between manufacturers, suppliers, and production batches. Please verify the actual product specifications before using the sensor in critical applications.
Product images are for illustrative purposes only and may differ from the actual product in colour, component placement, connector design, or other visual details.
This sensor is intended for general air-quality and particle detection applications and should not be used as the sole safety device for critical smoke, fire, or hazardous-air monitoring.
Important Note
Mounting Orientation
The sensor relies on natural rising heat to create airflow and must be mounted vertically with the connector facing downward. Installing the sensor horizontally may prevent proper air circulation through the sensing chamber.
Warm-Up Time
Allow approximately 1–3 minutes after powering on for the internal heater to stabilize before taking measurements.
Label Variation
The product label may read DSM501B. According to the supplied product information, DSM501A and DSM501B are considered functionally identical in pinout and performance for this product.
Power Supply
Use a stable 5V DC power supply and ensure correct wiring before powering the module.
Recommended Related Products
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Frequently Asked Questions
1. What is the DSM501A Dust Sensor?
The DSM501A is a particle detection sensor designed to detect airborne particles such as smoke, dust, pollen, and mites.
2. What is the minimum particle size it can detect?
The specified minimum particle size is approximately 1 micron.
3. What voltage does the sensor require?
The module operates from a 5V DC power supply.
4. What type of output does it provide?
It provides a PWM output based on low pulse occupancy time.
5. Does the sensor require an external fan?
No. It uses a built-in heater to create natural thermal airflow through the sensing chamber.
6. Is the DSM501A suitable for Arduino?
Yes. Its output can be interfaced with compatible microcontrollers such as Arduino.
7. How long does the sensor need to warm up?
Allow approximately 1–3 minutes after powering on for the heater to stabilize.
8. How should the sensor be mounted?
It should be mounted vertically with the connector facing downward so that the thermal airflow can circulate correctly.
9. What particles can it detect?
It can detect airborne particles including smoke, house dust, pollen, and mites.
10. What is the working current?
The specified working current is less than 90mA.
11. Can the sensor be used in an air purifier?
Yes. It can be used as a particle detection input for DIY and smart air purifier systems.
12. Is DSM501B compatible with DSM501A?
According to the supplied product information, the product may be labeled DSM501B, which is considered functionally identical in pinout and performance for this product.Only logged in customers who have purchased this product may leave a review.
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