UNI-T A37 CO2 Meter is used to detect CO2 concentration in environments. The LCD displays CO2 concentration being measured, temperature, humidity, and date/time together. Air quality is indicated with emoticons. When CO2 concentration gets too high, audible and visual alarm will go off.

Main Features

1. Automatic baseline correction

2. Audible and visual alarm

3. Low battery indication

4. Auto power off

5. Backlight


Specifications Range Resolution Precision
Model A37
Carbon dioxide 400ppm~5000ppm 1ppm ±5%rdg + 50ppm from 400ppm~2000ppm (at ambient temperature and humidity)
Temperature -10.0℃~50.0℃ 0.1℃ Typical accuracy: ±1℃
Relative humidity 0%RH~99%RH 1%RH Typical accuracy: ±5%RH (10%RH~90%RH) at 25℃
ABC Automatic baseline correction
Audible and visual alarm
Sensor type NDIR (no-dispersive infra) CO2 sensor
Response time T90 < 2 minutes
Date/time Display the date and time
Low power display low power symbol keep flashing
Auto power off auto power off if no opeartion for long time
Backlight The white backlight can be turned on/off.
It will be automatically turned off after 20-minute inactivity.
Operating temperature 0℃~50℃, 0%RH~85%RH
Storage temperature -20℃~60℃, 0%RH~95%RH
General Characteristics
Power 3.7V DC Li-ion battery/ Micro USB charging port
LCD size 42 x 65mm
Product color White
Product net weight about 195g
Product size 75 x 55 x 130mm
Standard accessory Micro USB charging cable
Standard individual packing Gift box, English manual
Standard quantity per carton 5pcs
Standard carton dimensions 360 x 185 x 140mm
Standard carton gross weight 2.35kg

Packages Include

1 × UNI-T A37 CO2 Meter

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Additional information

Weight 0.1 kg


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