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!

i+=1;

for(j=0;j<(ln-2);j++)

{

tempq+=*i;

i++;

}

tempq=(~tempq)+1;

return(tempq);

}

Cautions



Please do not use the modules in systems which related to human being’s safety.



Please do not use the modules in strong air convection environment.



Please do not expose the modules in high concentration organic gas for a long time.



Sensor shall avoid organic solvent, coatings, medicine, oil and high concentration gases.



Excessive impact or vibration should be avoided, otherwise the value won’t be accurate.



The module should be charged for over 24hours for the first time, and supply circuit should be

equipped with power reservation function. Otherwise, it will affect continuity and accuracy of

returned data if it goes offline for too long.



The module should avoid direct sunlight, and fool-proof socket should be used to fix the module (PCB

package library info pls contact salesperson). Its peripheral structure needs to be anti-rain, anti-shake

and anti-drop from the socket.



When communicate with module, it is recommended to correspond a serial port with a module, thus

make it convenient for later calibration and maintenance.



According to communication protocols, it is necessary to check whether byte0, byte1 and checksum

are correct after receiving the data, thus to ensure correctness of receiving data frames.



It is suggested to use USB - convert - TTL tools and UART debug assistant software, and observe based

on communication protocols to judge whether module communication is normal.

Zhengzhou Winsen Electronics Technology Co., Ltd

Add: No.299, Jinsuo Road, National Hi-Tech Zone,

Zhengzhou 450001 China

Tel: +86-371-67169097/67169670

Fax: +86-371-60932988

E-mail: sales@winsensor.com

Website: www.winsen-sensor.com