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Detail: Four-in-one Air detection sensor module

  • Four-in-one Air detection sensor module
  • Four-in-one Air detection sensor module
  • Four-in-one Air detection sensor module

Four-in-one Air detection sensor module

Description

HW300D2 Four-in-one Air detection sensor module is a cost-effective digital serial port output sensor module. It uses RS485 data bus and UART serial port TTL level two output modes, integrating laser PM2.5, PM10, temperature and humidity. It provides real-time and comprehensive detection of the environment, with good stability and is very convenient for customers.


Application areas:

Hotel room air quality monitoring

Agricultural greenhouses, outdoor farming environment monitoring

Fresh air ventilation system

Air purifier, air conditioner

Air quality monitoring equipment

Kitchen and bathroom ventilation control system

Smart home equipment

Features:

Simultaneously output four sets of data of PM2.5, PM10, temperature and humidity

High sensitivity and stable data

Simultaneously adopt RS485 bus and UART TTL level two output modes, which is convenient for customers to choose and use.

 Temperature is accurate to 0.1 °C, humidity is accurate to 0.1%

Automatically output these four sets of monitoring data through RS485 interface every second.

With power reverse protection

 

Specifications:

Classification

Measurement resolution

Measuring range

Measurement accuracy

PM2.5

0.8ug/m3

5ug5000ug

±10%

PM10

 

5ug5000ug

±10%

Temperature

0.01℃

-40℃125℃

±0.5℃

Humidity

0.04%

0100%

±3%RH

Physical interface

ZH1.5-4Horizontal mother

Output Data

UART-RS485

Operating Voltage

5.0±0.2VDC

Working current

≤60mA

Preheat time

2 minute

Operating temperature

0℃50℃

Working humidity

≤95RH

Dimensions

55.8*50*19.5mmL×W×H

Use life

5 year(in the air)


RS485 Interface definition:

Interface

Name

Function

1

5V

Connected to the power supply 5V

2

B

RS485Data port D-/B

3

A

RS485 Data port D+/A

4

GND

Power ground


UART Interface definition:

Interface

Name

Function

1

5V

Connected to the power supply 5V

2

TXD

UART data output pin

3

N/A

Hanging in the air

4

GND

Power ground


Communicate Agreements:

Baud rate

9600bps

Data bit

8 bit

Stop bit

1 bit

Check Digit

NON


Serial data stream format:

Byte

Name

Description

B1

Module address

Fixed value 3Ch

B2

Version

Fixed value 02h

B9

Data

PM2.5High byte

B10

Data

PM2.5 Low byte

B11

Data

PM10 High byte

B12

Data

PM10 Low byte

B13

Data

Temperature Integer part

B14

Data

Temperature decimal part

B15

Data

Humidity Integer part

B16

Data

Humidity decimal part

B17

Checksum

Checksum

Description: The temperature is accurate to 0.1 ° C, the humidity is accurate to 0.1%


Data example:

For example, if the value read is 3C 02 08 FC 00 79 01 D7 00 13 00 22 1B 03 30 02 18, the following results are obtained:

Checksum

B17=unit_8(3Ch+02h+08h+0FCh+00h+79h+01h+D7h+00h+13h+00h+22h+1Bh+03h+30h+02h)=18h

PM2.5

B9*256+B10=00h*256+13h=19ug/m3

PM10

B11*256+B12=00h*256+22h=34ug/m3

Temperature integer

B13=1Bh=27

Temperature fraction

B14*0.1=03h*0.1=0.3

Humidity integer

B15=30h=48%RH

Humidity decimal

B16*0.1=02h*0.1=0.2%RH