PM SDS011 High Precision Laser PM2.5 Air Quality Detection Sensor Module Super Dust Digital Output

Overview

The SDS011 using principle of laser scattering,can get the particle concentration between 0.3 to 10μm in the air. It with digital output and built-in fan is stable and reliable.

Characteristics

1. Accurate and Reliable: laser detection, stable, good consistency;

2. Quick response: response time is less than 10 seconds when the scene changes;

3. Easy integration: UART output (or IO output can be customized), fan built-in;

4. High resolution: resolution of 0.3μg/m3.

Scope of application

Detector of PM2.5;Purifier.

Working principle

Using laser scattering principle:

Light scattering can be induced when particles go through the detecting area. The scattered light is transformed into electrical signals and these signals will be amplified and processed. The number and diameter of particles can be obtained by analysis because the signal waveform has certain relations with the particles diameter.

Technical Parameters

About service life

Service life is the key parameter of laser dust sensor. The laser diode in this sensor has high quality and its service life is up to 8000 hours. If you need real-time data (such as detector), you can use the default configuration that measures at the frequency of 1time per second. On the occasion of real-time demand is not high (such as filter, air quality monitoring, etc.), you can use the discontinuous working method to prolong the service life. For example, you can start the sensor for 30 seconds per minutes. If you have any other requirements, please contact us, we are willing to serve for manufacturers and developers.

Product specifications

No

Name

Comment

1

CTL

Control pin, reserved

2

1 pm

PM2.5:0-999ug/m3;PWM Output

3

5v

5V Input

4

2.5um

PM10: 0-999 ug/m3;PWM Output

5

GND

Ground

6

R

RX of UART（TTL)

7

T

TX ofUART（TTL)

Product size
L*W*H=71*70*23mm
Interface specification

Number

Item

Parameter

Note

1

Measurement parameters

PM2.5,PM10

2

Range

0.0-999.9 ug /m3

3

Power supply voltage

5V

4

Maximum working current

220mA

5

Sleep current

2mA

6

Operating temperature

-20-50℃

7

Operating humidity

0-95%RH non-condensing

8

Air pressure

86KPa~110KPa

9

Corresponding time

1s

10

Serial data output frequency

1Hz

11

Minimum resolution of partical

<0.3 um

12

Counting yield

70%@0.3um, 98%@0.5 um

13

Relative error

Maximum of±15%and±10ug/m3

25℃,50%RH

14

Product size

71x70x23mm

without inlet hose

PS:The distance between each pin is 2.54mm.
The UART communication protocol
Bit rate :9600
Data bit :8
Parity bit:NO
Stop bit:1
Data Packet frequency:1Hz

The number of bytes

Name

Content

0

Message header

AA

1

Commander No.

co

2

DATA 1

PM2.5 Low byte

3

DATA2

PM2.5 High byte

4

DATA 3

PM10 Low byte

5

DATA 4

PM10 High byte

6

DATA5

ID byte 1

7

DATA 6

ID byte 2

8

Check-sum

Check-sum

9

Message tail

AB

Check-sum: Check-sum=DATA1+DATA2+...+DATA6.
PM2.5 value: PM2.5 (μg /m3) = ((PM2.5 High byte *256) + PM2.5 low byte)/10
PM10 value: PM10 (μg /m3) = ((PM10 high byte*256) + PM10 low byte)/10
PWM output description

Range of PM2.5 value

0-999ug /m3

Range of PM10 value

0-999ug /m3

Cycle

1004ms±1%

High level output time at the beginning of the whole cycle

2ms

The middle time of this cycle

1000ms±1%

Low level output time at the end of the whole cycle

2ms