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MULTIFUNCTION AIR QUALITY MONITOR (MODBUS)
User Guide for SRAQ-D696-1
Product Description
The SRAQ-D696-1, 7-in-1 air quality monitor is a comprehensive air quality sensor integrating CO
formaldehyde. This sleek wall-mount device features an integrated LCD, and provides real-time output via Modbus-RTU. Uses include building
automation as well as factory floors and other areas where the presence of these pollutants are a concern.
Features
Detects multiple pollutants CO
Integrated LCD shows concentrations
Modbus output
High reliability and good stability
High accuracy & fast response
Sleek wall-mount design
Applications
Office and commercial buildings
Factory floors
Laboratories
HAVC industry
Residential air quality monitor
IoT and smart home systems
Thank you for choosing L-com product. To ensure safe, accurate performance and product longevity, please take a moment to familiarize yourself
with this manual before powering the device. Please keep it handy for future reference. In case of any questions regarding the installation or use of
product, please call us at 800.341.5266.
Reach out to us at customerservice@l-com.com and visit our website at www.l-com.com
, dust etc.
2
, laser dust, temperature, and humidity, TVOC and
2
1
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Table of Contents
Related Manuals for Infinite L-com SRAQ-D696-1
Summary of Contents for Infinite L-com SRAQ-D696-1
- Page 1 MULTIFUNCTION AIR QUALITY MONITOR (MODBUS) User Guide for SRAQ-D696-1 Product Description The SRAQ-D696-1, 7-in-1 air quality monitor is a comprehensive air quality sensor integrating CO , laser dust, temperature, and humidity, TVOC and formaldehyde. This sleek wall-mount device features an integrated LCD, and provides real-time output via Modbus-RTU. Uses include building automation as well as factory floors and other areas where the presence of these pollutants are a concern.
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Page 2: Technical Parameters
Technical Parameters Detection Parameters and Resolution Pollutant Measurement resolution Measuring range Accuracy 50 ppm 400~2000 ppm ± 75 ppm PM 2.5 0.3 ug/m 0~1000 ug/m ± 10% PM 10 0.3 ug/m 0~1000 ug/m ± 10% Temperature 0.01 °C 0~60 °C ±... -
Page 3: Wire Definition
Wire Definition Sr. No. Function Notes Color 12 24 VDC, power supply positive Brown GND, power supply negative Black RS485_A+ RS485_A+ Green RS485_B- RS485_B- Blue Notes Avoid contact with organic solvents (including silica gel and other adhesives), coatings, pharmaceuticals, oil and high concentration gases. The module cannot withstand excessive impact or vibration. - Page 4 Read Address Command Send Data Format Address Code Function Code Register Start Address Register Number CRC_L CRC_H CRC check Read Data Format Address Code Function Code Data Length Sensor Data CRC_L CRC_H NN*2 xx xx…………xx xx CRC check Note: The returned sensor data xx xx…………xx xx , can be changed according to the register address and the length of the data. 00 MM represents the register address of the sensor, and the 00 NN is the data length.
- Page 5 Example: When the address is 01, the command is sent: 01 03 00 00 00 07 04 08 Returns the data as follows: Serial No. Name Explain (hex) Address Function code Data length Data 1 CO2_H Data 1 CO2_L Data 2 TVOC_H Data 2 TVOC_L...
- Page 6 CRC Check Calculation Method unsigned int CRC_Compute ( unsigned char *arr_buff, unsigned char len) unsigned int crc=0xFFFF; unsigned char i, j; for ( j=0; j <len;j++) crc=crc ^*arr_buff++; for ( i=0; i<8; i++) if( ( crc&0x0001) >0) crc=crc>>1; crc=crc^ 0xa001; else crc=crc>>1;...
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