---
product_id: 10335593
title: "Extech CO250 Portable Indoor Air Quality CO2 Meter with Datalogger - Carbon Dioxide, Temperature, Humidity, Dew Point, Wet Bulb, NDIR Sensor, 99 Record Storage, Large LCD Display"
brand: "extech"
price: "฿27854"
currency: THB
in_stock: true
category: "Extech"
url: https://www.desertcart.co.th/products/10335593-extech-co250-portable-indoor-air-quality-co2-meter-with-datalogger
store_origin: TH
region: Thailand
---

# 99-record datalogger 4 AA battery powered Multi-parameter sensing Extech CO250 Portable Indoor Air Quality CO2 Meter with Datalogger - Carbon Dioxide, Temperature, Humidity, Dew Point, Wet Bulb, NDIR Sensor, 99 Record Storage, Large LCD Display

**Brand:** extech
**Price:** ฿27854
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe smarter, work better — your indoor air quality sidekick!

## Quick Answers

- **What is this?** Extech CO250 Portable Indoor Air Quality CO2 Meter with Datalogger - Carbon Dioxide, Temperature, Humidity, Dew Point, Wet Bulb, NDIR Sensor, 99 Record Storage, Large LCD Display by extech
- **How much does it cost?** ฿27854 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/10335593-extech-co250-portable-indoor-air-quality-co2-meter-with-datalogger)

## Best For

- extech enthusiasts

## Why This Product

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

## Key Features

- • **Ready for Any Space:** Ideal for offices, classrooms, labs, and HVAC inspections where air quality is mission-critical.
- • **Portable & Intuitive:** Compact handheld design with large backlit LCD and easy keypad ensures effortless use on the go.
- • **Data-Driven Decisions:** Stores up to 99 records with built-in datalogger, perfect for trend analysis and compliance reporting.
- • **Precision CO₂ Tracking:** Advanced NDIR sensor delivers accurate readings from 0 to 5,000 ppm for confident indoor air quality management.
- • **Comprehensive Environmental Insight:** Simultaneously monitors temperature, humidity, dew point, and wet bulb to give a full picture of your indoor climate.

## Overview

The Extech CO250 is a portable indoor air quality meter featuring an advanced NDIR sensor for precise CO₂ measurement up to 5,000 ppm. It simultaneously tracks temperature, humidity, dew point, and wet bulb, storing up to 99 data records for detailed environmental analysis. Powered by 4 AA batteries and equipped with a large backlit LCD, it’s designed for professionals needing reliable, on-the-go air quality monitoring across diverse indoor settings.

## Description

Product Description Bottle, Capacity 32 Oz. , Basic Material Glass, Shape Boston Round, Mouth Narrow, Screw Closure Size 33-400Mm, Body Color Amber, Body Material Glass, Closure Color Black, Closure Material Phenolic Pulp/Vinyl, Graduation Range Not Specified, Height 210Mm, Diameter 94Mm, Package Quantity 12 From the Manufacturer Portable Indoor Air Quality CO2 Meter measures Carbon Dioxide (C02), Temperature, Humidity, Dew Point, and Wet Bulb. Checks for Carbon Dioxide (CO2) concentrations and calculates statistical weighted averages of TWA (8 hour time weighted average) and STEL (15 minute short term exposure limit). User programmable audible alarm. Data acquisition software and cable included to record and document CO2, Humidity and Temperature data. Complete with software and cable, 4 AA batteries, and carrying case.

## Features

- Accurate CO₂ Monitoring - Measures carbon dioxide levels from 0 to 5,000 ppm using an advanced NDIR sensor for reliable indoor air quality testing
- Multi-Parameter Measurement - Simultaneously tracks temperature, humidity, dew point, and wet bulb for complete indoor environmental assessment
- Portable & User-Friendly Design - Compact handheld unit with large backlit LCD and intuitive keypad makes it easy for field technicians, inspectors, and HVAC professionals
- 99-Record Data Storage - Built-in datalogger stores up to 99 sets of readings, ideal for trend monitoring, workplace safety checks, and compliance reporting
- Versatile Applications - Perfect for offices, classrooms, laboratories, factories, greenhouses, and HVAC inspections where indoor air quality is critical

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0029V2GB4 |
| Batteries | 4 AA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #119,196 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #147 in Indoor Air Quality Meters |
| Color | Black |
| Customer Reviews | 3.8 3.8 out of 5 stars (18) |
| Date First Available | May 14, 2009 |
| Included Components | Unit^Instruction Guide |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 6.7 ounces |
| Item model number | CO250 |
| Manufacturer | Extech |
| Number Of Pieces | 1 |
| Part Number | CO250 |
| Product Dimensions | 2.76 x 2.24 x 7.87 inches |
| Style | CO250 |
| Warranty Description | 1 year |

## Images

![Extech CO250 Portable Indoor Air Quality CO2 Meter with Datalogger - Carbon Dioxide, Temperature, Humidity, Dew Point, Wet Bulb, NDIR Sensor, 99 Record Storage, Large LCD Display - Image 1](https://m.media-amazon.com/images/I/71tSenpNJtL.jpg)
![Extech CO250 Portable Indoor Air Quality CO2 Meter with Datalogger - Carbon Dioxide, Temperature, Humidity, Dew Point, Wet Bulb, NDIR Sensor, 99 Record Storage, Large LCD Display - Image 2](https://m.media-amazon.com/images/I/61ZummmaegL.jpg)

## Questions & Answers

**Q: Does it data logging? If so, how can the data is recovered?**
A: Built-in RS-232 interface for capturing readings on PC * Data acquisition software and cable included to record and document CO2, Humidity and Temperature data

**Q: Does it come with certificate of calibration?**
A: The standard calibration price is $195. and the option is NIST Certificate. this will add 1 week to your order.

**Q: If one does not pay to have it calibrated as in the other answer, how does the meter establish a baseline?**
A: Turn it on outside for baseline readings.

**Q: Can it be calibrated at a later date?**
A: Thank you for your question. The calibration for new item is made by the manufacturer, so it is not possible to set up the later date.

## Frequently Bought Together

- Extech CO250 Portable Indoor Air Quality CO2 Meter/Datalogger
- Extech LT45 LED Light Meter

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-06-14*