Airwave Gas Detection Logo

Indoor Air Quality Monitor | MB-350 Series

Home | CO2 Sensor Modules  | MB-350 Series Indoor Air Quality Monitors

About the Product

MB-350 Series Indoor Air Quality Monitor displays ambient CO2 values, temperature, and humidity on an easy-to-read and long-lasting LCD panel.

These units feature bright color LED indicators, which can be seen from as far as 7m away.

The USB port extends connectivity to your PC and on-site network, making this a favorite among public buildings, schools, hospitals, industrial environments, and residential structures.

Indoor Air Quality Monitor PC Connection

The ELT-WSD program has been specifically designed to empower customers with the ability to customize the CO2 alarm range of the MB-350. This program operates seamlessly through a USB 2.0 interface connected to a PC. To initiate the process, simply execute the “ELT_WSD_MB-350.exe” file while ensuring a mini-USB cable links the PC and MB-350. It’s important to note that a 12V power source (via a 12V AC/DC Adapter) must be supplied for the MB-350 during this procedure.


This Indoor Air Quality Monitor solution finds application in a variety of settings, including educational facilities, health care facilities, refrigeration units, and various other consumer electronics. Its versatility allows it to address the diverse needs of these environments, ensuring optimal performance and functionality across different sectors.
Sensing Method CO2 Sensor – NDIR (Non-dispersive Infrared) CO Sensor – Semiconductor Sensor
Dimensions 135 x 90 x 28mm (W*H*D)
CO2 Measurement Range 0 ~ 10,000ppm
CO Measurement Range 0 ~ 250ppm (Option : 0 ~ 1,000ppm)
CO2 Accuracy ±30ppm ±3% of Reading
CO Accuracy 0~100ppm : 10% F.S. 101~250ppm : 15% F.S.
Temperature Accuracy ± 0.3 ℃ typical (-40℃ ~ 80℃)
Humidity Accuracy ± 2% RH typical (0~ 99% RH)
Operating Temperature Range -0℃ ~ 50℃
Storage Temperature -30℃ ~ 70℃
Operating Humidity Range 0 ~ 95% RH (Non-condensing condition)
Input Power DC 12V/1A AC/DC adaptor
Response Time 150 Seconds (90%)
Sampling Interval 3 Seconds
Alarm – LED Level (Green/Orange/Red) (CO2, CO)
– Melody warning (buzzer on/off)
Other Option VOCs (Semiconductor Type)
RS-485 Modbus