Zhengzhou Winsen Electronics Technology Co., Ltd

www.winsen-sensor.com

Tel: 86-371-67169097/67169670 Fax: 86-371-60932988

Email: sales@winsensor.com

Leading gas sensing solutions supplier in China!

Tempera

ture

Range

-20~65℃

Accuracy

±

0.5℃(0-65℃)

Humidity

Range

0~100%RH

Accuracy

±

3%RH

Working temperature

-10～50℃

Working humidity

15~80% RH(no condensing)

Storage temperature(recommend)

0～25℃

Storage humidity (recommend)

0~80% RH

Dimensions

135 x 50 x 26.2mm (L x W x H)

Pin Definition

Serial communication protocol format

1. Communication parameter

Baud rate

9600bps

Data bit

8bit

Stop bit

1bit

Check digit

None

2. Communication command

The communication between the host and module, adopts question and answer mode.

The command format to read the module concentration is as following:

Byte0

Byte1

Byte2

Byte3

Byte4

Byte5

Byte6

Byte7

Byte8

Start bit

Reserved Command

Reserved

Reserved

Reserved

Reserved

Reserved

Check

value

0xFF

0x01

0x86

0x00

0x00

0x00

0x00

0x00

0x79

The command format which the module returns the concentration value is as following:

Byte0

Byte1

Byte2

Byte3

Byte4

Byte5

Byte6

Byte7

Byte8

Start bit

Command

PM1.0

PM2.5

PM10

CO2

0xFF

0x86

0x00

0x65

0x00

0x36

0x00

0x96

0x01

Byte9

Byte10

Byte11

Byte12

Byte13

Byte14

Byte15

Byte16

Byte17

CO2

VOC

Temperature

Humidity

CH2O

CO

PIN

Definition

PIN1

GND

PIN2

+5V

PIN3

RXD(UART input)

PIN4

TXD(UART output)