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Product description: Laser dust/air purity sensor PM2.5 and PM10 SDS018 - 5V UART/PWM
A laser dust sensor for monitoring air quality. It detects particles larger than 0.3 μm in diameter and measures PM2.5 and PM10. It features a fan for air suction. The system operates with a voltage of 4.7 V to 5.3 V and communicates via UART or PWM signals.
Check how to connect the sensor with: |
Laser dust/air purity sensor PM2.5 and PM10 SDS018 - 5V UART/PWM.
Connecting the sensor
The sensor has seven pins, described in the table. When connecting the sensor to an Arduino or other 5V devices, a voltage converter is necessary.
| Pin | Description |
|---|---|
| NRT | Not connected. |
| 1µm | PWM output. See documentation for details. |
| 5V | Supply voltage: 4.7 V to 5.3 V. |
| 2.5µm | PWM output. See documentation for details. |
| GND | System mass. |
| RXD | UART interface receiver (3.3V) |
| TXD | UART interface transmitter (3.3V) |
Laser dust/air purity sensor PM2.5 and PM10 SDS018 - 5V UART/PWM.
Air quality sensor specifications
- Supply voltage: 4.7 V to 5.3 V
- Current consumption: approx. 70 mA
- Sensitivity: 0.3 μm
- Measuring range: 0 µg/m³ to 999.9 µg/m³
- Communication: UART/PWM signal
- 7-pin connector: 2.54 mm pitch
- Operating temperature: -10°C to 50°C
- Atmospheric pressure: 86 kPa to 110 kPa
- Board dimensions: 59 x 45 x 20 mm
Characteristics of the SDS018 sensor
The SDS018 sensor, designed for measuring air quality, operates on the principle of laser light scattering. The laser beam is scattered as particles pass through the detection area. The scattered light is converted into electrical signals, which are amplified and converted into a PWM signal. The concentration and diameter of particulate matter in the air are determined based on the analysis, as the PWM signal waveform reflects the physical dimensions of PM2.5 particles. The SDS018 sensor can be used in applications such as air purification systems and measurement systems for assessing air quality.
SDS018 air quality sensor lifespan
Service life is one of the most important technical parameters of the SDS018 air quality sensor. Thanks to the use of a high-quality laser-emitting diode, the sensor can operate without failure for at least 8,000 hours. If your application requires precise time measurement, you can use the SDS018 sensor in the default mode, which takes a measurement every second. However, if your application does not require precise time measurement, you can enable a second mode, in which the sensor takes a measurement once every 30 seconds. This mode significantly extends the sensor's service life.
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