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 Indoor Air Quality Co2 Meter Datalogger

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

Help Track order

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R16051

Duties & taxes included

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

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Description

🌬️ Breathe smarter, work safer — the CO2 meter that keeps you ahead of the curve.

PORTABLE READY TO USE - Comes with 4 AA batteries included—monitor air quality anywhere, anytime.
SMART EXPOSURE INSIGHTS - Instantly calculate 8-hour TWA and 15-minute STEL for workplace safety compliance.
COMPACT LIGHTWEIGHT DESIGN - At just 190g and 20cm tall, it fits perfectly in your professional toolkit.
TRUSTED AMERICAN ENGINEERING - Proudly made in the USA with reliable accuracy for critical indoor environments.
COMPREHENSIVE AIR QUALITY MONITORING - Track CO2, temperature, humidity, dew point & wet bulb in one sleek device.

The Extech CO250 is a portable indoor air quality meter and datalogger that measures CO2, temperature, humidity, dew point, and wet bulb. It calculates time-weighted averages (TWA) and short-term exposure limits (STEL) to help professionals maintain safe indoor environments. Powered by included AA batteries and designed for portability, it offers reliable, American-made precision in a compact form factor.

Specifications

ASIN	B0029V2GB4
Are batteries included?	Yes
Batteries	4 AA batteries required. (included)
Best Sellers Rank	#242,480 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #438 in Indoor Air Quality Meters #943 in Home Improvement Tools & Testers
Brand	Extech
Country of Origin	USA
Customer Reviews	3.9 3.9 out of 5 stars (18)
Date First Available	12 August 2012
Item Dimensions LxWxH	7 x 5.7 x 20 Centimeters
Item Height	20 Centimeters
Item Weight	190 g
Item Width	5.7 Centimeters
Item model number	CO250
Lithium Battery Packaging	Batteries contained in equipment
Lithium battery weight	190 Grams
Manufacturer	Extech
Model number	CO250
Number of Memory Sticks	1
Product Dimensions	7 x 5.7 x 20 cm; 189.94 g

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Excellent communication throughout the order process. Product is perfect.

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