18 Years Factory Iaq Meter - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy
18 Years Factory Iaq Meter - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy Detail:
♦ Real time monitoring room carbon dioxide
♦ NDIR infrared CO2 sensor inside with special Self Calibration. It makes the CO2 measurement more accurate and more reliable.
♦ More than 10 years lifetime of CO2 sensor
♦ Temperature and humidity monitoring
♦ Three-color (Green/Yellow/ Red) LCD backlight indicates ventilation level -optimal/moderate/poor based on the CO2 measurements
♦ Buzzer alarm available/disable selected
♦ Optional display 24h average and max. CO2
♦ Provide optional 1xrelay output to control a ventilator
♦ Provide optional Modbus RS485 communication
♦ Touch button for easy operation
♦ 24VAC/VDC or 100~240V or USB 5V power supply
♦ wall mounting or desktop placement available
♦ High quality with the excellent performance, best choice for schools and offices
♦ CE-approval
Power supply | 100~240VAC or 24VAC/VDC wire connecting USB 5V (>1A for USB adaptor) 24V with an adaptor |
Consumption | 3.5 W max. ; 2.5 W avg |
Gas detected | Carbon Dioxide (CO2) |
Sensing element | Non-Dispersive Infrared Detector (NDIR) |
Accuracy@25℃(77℉) | ±50ppm + 3% of reading |
Stability | <2% of FS over life of sensor (15 yr typical) |
Calibration interval | ABC Logic Self Calibration Algorithm |
CO2 sensor life | 15 years |
Response Time | <2 minutes for 90% step change |
Signal update | Every 2 seconds |
Warm up time | <3 minutes (operation) |
CO2 measuring range | 0~5,000ppm |
CO2 Display resolution | 1ppm |
3-color backlight for CO2 range | Green : <1000ppm Yellow: 1001~1400ppm Red: >1400ppm |
LCD Display | Real time CO2, Temp &RH Extra 24h average/max/min CO2 (optional) |
Temperature measuring range | -20~60℃(-4~140℉) |
Humidity measuring range | 0~99%RH |
Relay output (optional) | One relay output with rated switching current: 3A, resistance load |
Operation conditions | -20~60℃(32~122℉); 0~95%RH, non condensing |
Storage conditions | 0~50℃(14~140℉), 5~70%RH |
Dimensions/ Weight | 130mm(H)×85mm(W)×36.5mm(D) / 200g |
Housing and IP class | PC/ABS fireproof plastic material, protection class: IP30 |
Installation | Wall mounting (65mm×65mm or 2”×4”wire box) Desktop placement |
Standard | CE-Approval |
Product detail pictures:


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The very rich projects management experiences and one to one service model make the high importance of business communication and our easy understanding of your expectations for 18 Years Factory Iaq Meter - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy , The product will supply to all over the world, such as: Kuwait, Israel, Adelaide, As operation principle is "be market-oriented , good faith as principle, win-win as objective", holding on "customer first, quality assurance, service first" as our purpose, dedicated to provide the original quality, create excellence service , we won the praise and trust in the industry of auto parts. In the future, We will provide quality product and excellent service in return to our customers , welcome any suggestions and feedback from all over the world.

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