---
product_id: 25742880
title: "Portable CO2 Meter Handheld CO2 Detector Monitor 0~9999ppm, Carbon Dioxide Meter with Alarm Function, Temperature & Humidity Meter NDIR Sensor Air Quality Monitor for Home Trip Classroom and Office"
brand: "gain express"
price: "€ 268.47"
currency: EUR
in_stock: true
reviews_count: 8
category: "Gain Express"
url: https://www.desertcart.gr/products/25742880-portable-co2-meter-handheld-co2-detector-monitor-0-9999ppm-carbon
store_origin: GR
region: Greece
---

# Humidity 0.1~99.9% ±3%RH CO2 range 0~9999ppm ±5-10% Temp range -10~60°C ±0.6°C Portable CO2 Meter Handheld CO2 Detector Monitor 0~9999ppm, Carbon Dioxide Meter with Alarm Function, Temperature & Humidity Meter NDIR Sensor Air Quality Monitor for Home Trip Classroom and Office

**Brand:** gain express
**Price:** € 268.47
**Availability:** ✅ In Stock

## Summary

> 💨 Breathe Smart, Work Smarter — Your Portable Air Quality Guardian

## Quick Answers

- **What is this?** Portable CO2 Meter Handheld CO2 Detector Monitor 0~9999ppm, Carbon Dioxide Meter with Alarm Function, Temperature & Humidity Meter NDIR Sensor Air Quality Monitor for Home Trip Classroom and Office by gain express
- **How much does it cost?** € 268.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/25742880-portable-co2-meter-handheld-co2-detector-monitor-0-9999ppm-carbon)

## Best For

- gain express enthusiasts

## Why This Product

- Trusted gain express brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Alarm Alerts:** Customizable audible alarm warns you instantly when CO2 levels exceed safe thresholds—stay ahead of poor air quality.
- • **Precision You Can Trust:** High-accuracy NDIR sensor delivers reliable CO2 readings from 0 to 9999ppm, ensuring your environment is always safe and ventilated.
- • **Versatile Power Options:** Runs on included batteries or optional 9V adapter with automatic power switching for uninterrupted monitoring.
- • **Portable & User-Friendly:** Lightweight handheld design with easy manual calibration and intuitive controls—perfect for professionals on the move.
- • **All-in-One Air Quality Insight:** Simultaneously monitor CO2, temperature, humidity, dew point, and wet bulb for a comprehensive indoor air profile.

## Overview

This handheld Portable CO2 Meter features a high-accuracy NDIR sensor measuring CO2 levels from 0 to 9999ppm with ±5-10% accuracy, alongside temperature (-10 to 60°C) and humidity (0.1% to 99.9% RH) monitoring. Designed for professionals, it offers a lightweight, portable form factor with manual calibration and an audible alarm to alert unsafe CO2 concentrations. Ideal for offices, classrooms, and homes, it supports dual power sources and provides comprehensive air quality data to ensure healthier indoor environments.

## Description

Portable CO2 Meter Handheld CO2 Detector Monitor 0~9999ppm, Carbon Dioxide Meter with Alarm Function, Temperature & Humidity Meter NDIR Sensor Air Quality Monitor for Home Trip Classroom and Office: desertcart.com: Industrial & Scientific

Review: Quirky late 1980’s design aesthetic but it works - Indispensable instrument in this time of pandemic to ensure that your environment is adequately ventilated. I’m glad I bought this; my tightly sealed house had a reading of 1600 PPM CO2 and this meter clearly shows when the windows have been opened long enough to bring CO2 down to a healthier level of 600 to 800 ppm. Buy this if you want to look like a contractor. It’s ginormous and yelliw but actually light weight, especially for the size. C02 reading comes up in 30 seconds after a countdown; initial indoor relative humidity indoors after unit is outdoors takes a while to stabilize maybe ten or 15 minutes. The toggle between air, wet bulb, and dew point temperature is nice; kind of wish it also showed heat index. Now the bad: Terrible human factors design; without the manual you’d never figure this thing out - fortunately the tiny manual explains it all pretty well. Don’t lose the manual. Buttons are excessively debounced to the point that sometimes a button press isn’t recognized. A RS232 interface??? Stone age technology and forget about using your phone to log data. Alarm initially set to 1000 PPM probably isn’t a good choice; if you take this to your local grocery store or neighborhood bar or school or workplace and make a measurement that’s above this strict limit you’ll freak everyone out. It’s easily changed (but don’t forget the manual) I would buy this again. It works well. I like it.
Review: Good quality and durable - We've bought several of these over the years and they are workhorses. Alway work, battery lasts forever, accurate and consistent.

## Features

- HIGH ACCURACY: CO2 Accuracy 0~2000ppm(±50ppm or ±5% of the reading); 2000~9999ppm(±10% of the reading)
- LARGE MEASURING RANGE: CO2: 0~9999ppm ; Temperature: -10~60°C(Accuracy ±0.6°C) ; Humidity: 0.1% ~ 99.9%RH(Accuracy ±3%RH) ; Dew Point: -20.0~59.9°C ; Wet Bulb: -5.0~59.9°C
- USER FRIENDLY: Portable Handle Design; Easily manual calibration on CO2 and humidity; Stable NDIR CO2 sensor
- POWER SUPPLY: Dual power source battery (included) or 9V adaptor (NOTED: adaptor is not included in set); Power from battery is automatically cut off when 9V adaptor is in use
- APPLICATION: IAQ monitoring and survey; especially on CO2 level and air ventilation become widely applied in public areas such as offices; classrooms; factories; hospitals and hotels

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01966BZDY |
| Alarm | Audible |
| Best Sellers Rank | #41,734 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #82 in Indoor Air Quality Meters |
| Brand | Gain Express |
| Color | Yellow |
| Customer Reviews | 4.4 out of 5 stars 283 Reviews |
| Item Height | 8.27 inches |
| Item Weight | 200 Grams |
| Manufacturer | Gain Express Holdings Ltd |
| Model Number | A017755 |
| Operating Humidity | 99 9 percent |
| Power Source | Battery Powered |
| Product Style | Digital CO2 Meter |
| Style | Digital CO2 Meter |
| UPC | 600316560665 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 60 Degrees Celsius |

## Product Details

- **Alarm:** Audible
- **Brand:** Gain Express
- **Color:** Yellow
- **Item Weight:** 200 Grams
- **Manufacturer:** Gain Express Holdings Ltd
- **Operating Humidity:** 99 9 percent
- **Power Source:** Battery Powered
- **Style:** Digital CO2 Meter
- **UPC:** 600316560665
- **Upper Temperature Rating:** 60 Degrees Celsius

## Images

![Portable CO2 Meter Handheld CO2 Detector Monitor 0~9999ppm, Carbon Dioxide Meter with Alarm Function, Temperature & Humidity Meter NDIR Sensor Air Quality Monitor for Home Trip Classroom and Office - Image 1](https://m.media-amazon.com/images/I/71+eOoxRUgL.jpg)

## Questions & Answers

**Q: Can you connect a hose for scientific experiments?**
A: No.

**Q: what is the country of origin?**
A: Made it China, but it seems to be an accurate measurement.

**Q: Do you sell the software and hardware for data collection separately for this unit?**
A: Yes, you can buy the software and cable from the link below.

ASIN: B01BWJIRMK
URL: https://www.amazon.com/dp/B01BWJIRMK?ref=myi_title_dp

**Q: How accurate is the co2 sensor?**
A: Very

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quirky late 1980’s design aesthetic but it works
*by J***E on August 15, 2020*

Indispensable instrument in this time of pandemic to ensure that your environment is adequately ventilated. I’m glad I bought this; my tightly sealed house had a reading of 1600 PPM CO2 and this meter clearly shows when the windows have been opened long enough to bring CO2 down to a healthier level of 600 to 800 ppm. Buy this if you want to look like a contractor. It’s ginormous and yelliw but actually light weight, especially for the size. C02 reading comes up in 30 seconds after a countdown; initial indoor relative humidity indoors after unit is outdoors takes a while to stabilize maybe ten or 15 minutes. The toggle between air, wet bulb, and dew point temperature is nice; kind of wish it also showed heat index. Now the bad: Terrible human factors design; without the manual you’d never figure this thing out - fortunately the tiny manual explains it all pretty well. Don’t lose the manual. Buttons are excessively debounced to the point that sometimes a button press isn’t recognized. A RS232 interface??? Stone age technology and forget about using your phone to log data. Alarm initially set to 1000 PPM probably isn’t a good choice; if you take this to your local grocery store or neighborhood bar or school or workplace and make a measurement that’s above this strict limit you’ll freak everyone out. It’s easily changed (but don’t forget the manual) I would buy this again. It works well. I like it.

### ⭐⭐⭐⭐⭐ Good quality and durable
*by C***T on August 24, 2024*

We've bought several of these over the years and they are workhorses. Alway work, battery lasts forever, accurate and consistent.

### ⭐⭐⭐⭐ Works. Instructions are clear.
*by A***T on December 17, 2025*

Used to measure CO2 ppm in a space heated by kerosene. The meter instructions says it is factory calibrated at 400 ppm. It read 432 in the outside air. I don't understand people's issues with the manual. It is easy to read. The calibration instructions are clear but yes you do need the manual. I have not check the accuracy with test gas as those test cylinders are ~ $200. Regarding the calibration procedure and for the fear of losing the manual. Take a picture of that paragraph and put it in the case. Potential problem addressed.

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-25*