© Operation manual for WZ-H3N-mini Selective HCHO Module WZ-H3N-mini Selective Formaldehyde Module ProSense Technologies Co., Ltd.

8 Operation manual for WZ-H3N-mini Selective HCHO Module WZ-H3N-mini compact & selective formaldehyde module combines selective HCHO sensor with advanced electronic control technology, converting HCHO concentration into PPM directly. WZ-H3N-mini selective HCHO module has very low response to interference gases, such as C2H50H and can generate accurate detection result. WZ-H3N-mini selective HCHO module is pre-calibrated in the factory and can be integrated into your system directly. Typical Applications Smart home Portable devices Wearable devices Air conditioners Air cleaners

Operation manual for WZ-H3N-mini Selective HCHO Module Technical Specification Communication Protocol

8 Operation manual for WZ-H3N-mini Selective HCHO Module Module makes use of serial communication. Communication configuration parameters are:

Operation manual for WZ-H3N-mini Selective HCHO Module Gas concentration = concentration (high byte)*256 + concentration (low byte) Checksum calibration /************************************************************************* *Function name：unsigned char FucCheckSum(uchar *i,ucharln) *Function description：checksum calibration[Take Not(Byte1+Byte2+…Byte7) +1] *Note：Take Not(Byte1+Byte2+…ByteX (X>2) *************************************************************************/ unsigned char FucCheckSum(unsigned char *i, unsigned char ln) { unsigned char j, tempq=0; i+=1; for(j=0; j<(ln-2); j++) {...