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.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

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

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

Product ID: 10335593

📊99-record datalogger

🔋4 AA battery powered

🌡️Multi-parameter sensing

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 475.66

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered 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 Slovakia.

Secure transaction

Description

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

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.

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.

Specifications

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

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.