Does it data logging? If so, how can the data is recovered?

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

Does it come with certificate of calibration?

The standard calibration price is $195. and the option is NIST Certificate. this will add 1 week to your order.

If one does not pay to have it calibrated as in the other answer, how does the meter establish a baseline?

Turn it on outside for baseline readings.

Can it be calibrated at a later date?

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.

Extech Co250 Portable Air Quality Co2 Meter With Datalogger

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Breathe smarter, work safer — your pocket-sized air quality guardian!

VERSATILE USE CASES - Ideal for offices, classrooms, labs, factories, and greenhouses where air quality impacts health and productivity.
DATA DRIVEN DECISIONS - Stores up to 99 data sets for trend analysis, compliance reporting, and workplace safety monitoring.
ON THE GO PORTABILITY - Compact, lightweight design with large backlit LCD and intuitive keypad—perfect for field professionals.
PRECISION CO₂ MONITORING - Advanced NDIR sensor delivers accurate readings up to 5,000 ppm for trusted indoor air quality insights.
COMPREHENSIVE ENVIRONMENTAL TRACKING - Simultaneously measures temperature, humidity, dew point, and wet bulb for a full indoor climate profile.

The Extech CO250 is a professional-grade portable air quality meter featuring an advanced NDIR sensor for precise CO₂ measurement up to 5,000 ppm. It tracks multiple environmental parameters including temperature, humidity, dew point, and wet bulb, all displayed on a large backlit LCD. Designed for HVAC technicians, inspectors, and facility managers, it stores up to 99 readings for trend analysis and compliance. Lightweight and battery-powered, it’s the essential tool for ensuring healthy, safe indoor environments across diverse settings.

Specifications

ASIN	B0029V2GB4
Batteries	4 AA batteries required. (included)
Best Sellers Rank	#120,996 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #150 in Indoor Air Quality Meters
Date First Available	May 14, 2009
Item Weight	6.7 ounces
Item model number	CO250
Manufacturer	Extech
Product Dimensions	2.76 x 2.24 x 7.87 inches

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₩603789

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Extech CO250 Portable Air Quality CO2 Meter with Datalogger

Description

Specifications

Common Questions