Gravity: PM2.5 Air Quality Sensor
📦 Location of the warehouse: China
Free shipping for you
Free Shipping from 30€ in Germany, 50€ in the EU!
Trustpilot rating: 4/5
Thank you for your support - rate us on Trustpilot!
Gravity: PM2.5 Air Quality Sensor
As awareness of air quality grows, monitoring particulate matter like PM2.5, PM1.0, and PM10 has become essential. The Gravity: PM2.5 Air Quality Sensor by DFRobot offers a highly reliable and accurate solution for real-time air quality detection, based on laser scattering technology.
The sensor uses a digital universal particle sensing module to continuously collect and calculate the number and size distribution of suspended particulate matter in the air. Leveraging the MIE scattering theory, it delivers precise data on particle concentration via a simple and efficient I2C interface.
Its compact and ultra-thin design (12mm) makes it ideal for portable environmental monitoring devices, while the Gravity interface ensures easy integration with mainstream microcontrollers like Arduino.
How It Works
A laser light source illuminates airborne particles, causing scattering. The scattered light is collected and analyzed by a microprocessor, which calculates the particle size and concentration using an advanced algorithm. The output is then sent to a connected MCU as a digital signal.
Key Features
-
Laser scattering technology for high accuracy
-
Real-time response with continuous data acquisition
-
Zero false alarm rate
-
Minimum detectable particle size: 0.3µm
-
360° shielding for enhanced anti-interference performance
-
Compact 12mm thickness, perfect for embedded systems
Applications
-
Air purifiers and environmental equipment
-
Indoor air monitoring systems
-
Smart home and HVAC integration
-
Smoke detection and dust monitoring
-
Portable air quality meters
Specifications
-
Working Voltage: 3.3V ~ 5V
-
Max Working Current: 100mA
-
Standby Current: ≤2mA
-
Data Interface Level: L＜0.8V, H＞2.7V (Max 3.3V)
-
Particle Measurement Range: 0.3–1.0μm, 1.0–2.5μm, 2.5–10μm
-
Counting Efficiency: 50% @ 0.3μm, 98% @ ≥0.5μm
-
Effective PM2.5 Range: 0–500μg/m³
-
Max PM2.5 Range: ≥1000μg/m³
-
Resolution: 1μg/m³
-
PM2.5 Accuracy:
-
±10% @ 100–500μg/m³
-
±10μg/m³ @ 0–100μg/m³
-
-
Standard Volume: 0.1 L
-
Single Response Time: ＜1s
-
Comprehensive Response Time: ≤10s
-
Operating Temperature: -10℃ to +60℃
-
Operating Humidity: 0–95% RH (non-condensing)
-
MTBF: ≥5 years
-
Dimensions: 67mm × 40mm × 14mm (2.64" × 1.57" × 0.55")
Shipping List
-
Gravity: PM2.5 Air Quality Sensor x1
-
Gravity-4P I2C/UART Sensor Cable x1
Effective Date: March 27, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
- Refunds may be subject to additional shipping fees unless the return is due to our error.
- A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.
Payment Platform Fees
For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.
