Does this detector require calibrating? is so how often and can it be done by user or does it have to be sent off?

CO2 and RH can be calibrated by users, users can calibrate by themselves if they feel that the readings are inaccurate or users may calibrate it every 2 to 3 months to ensure accuracy, calibration steps can be found in the user manual.

Co2 Meter Handheld Co2 Monitor 9999ppm Measuring Range Carbon Dioxide

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

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

Help Track order

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Description

🌬️ Breathe smarter, live better — your air quality guardian on the go!

DATA DRIVEN INSIGHTS - Optional PC software enables real-time logging and analysis to optimize your space’s air quality.
INSTANT AUDIBLE ALERTS - Sound alarm triggers when CO2 levels exceed safe thresholds—stay informed and proactive.
VERSATILE POWER OPTIONS - Use included battery or 9V adapter for uninterrupted monitoring anywhere, anytime.
ADVANCED NDIR SENSOR TECHNOLOGY - Stable, reliable CO2 detection ensures you never miss critical air quality changes.
PRECISION AIR QUALITY MONITORING - Accurately track CO2, temperature, and humidity with 0.1 unit resolution for a healthier indoor environment.

The Gain Express Handheld CO2 Meter features a high-precision NDIR sensor with a wide 0-9999ppm CO2 measuring range, plus temperature and humidity monitoring with 0.1 unit resolution. Its triple display and audible alarm keep you instantly informed of air quality changes. Powered by battery or 9V adapter, it supports optional PC logging for professional-grade environmental tracking.

Specifications

ASIN	B01966BZDY
Alarm	Audible
Best Sellers Rank	288,735 in DIY & Tools ( See Top 100 in DIY & Tools ) 50 in CO2 Detectors 3,022 in Scanners & Testers
Brand	GAIN EXPRESS
Colour	Portable Co2 Meter
Customer Reviews	4.4 out of 5 stars 284 Reviews
Item Weight	200 Grams
Item weight	200 Grams
Manufacturer	Gain Express Holdings Ltd
Model Number	A017755
Number of Items	1
Operating Humidity	0-99 percent
Part Number	A017755
Power source	Battery Powered
Product Style	Ergonomic
Sensor Type	Non Dispersive Infrared
Style	Ergonomic
UPC	600316560665
Unit Count	1.0 count
Upper Temperature Rating	60 Degrees Celsius

Reviews

R**R

Great meter, great value

Great co2 meter bought 4units for drill site work. Very happy

13.04.2026

A**R

good quality

works well, but it is a bit pricey, though

23.09.2024

P**S

Gas equipment

Compact seems to work well I've only used 3 times

2.06.2024

ピ**マ

使いやすさ

まだ使ってないが試したら使いやすそうだ

15.01.2026

J**L

que es portatil y se puede llevar a cualquier lugar

mide bien y esta bien de precio

29.10.2025

J**Y

Fairly simple to use.

Works great. We use it to monitor corn in our grain bins.

2.09.2026

G**S

Aditamentos extra difíciles de conseguir

Compré el producto para medir CO2 de manera continua en el laboratorio, sin embargo no pude conseguir el software y cables adicionales. Tuve que comprar otro equipo de otra marca.

7.10.2022

A**É

Bon produit

Qualité et précision bien correcte.

3.09.2022

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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54791 som

Duties & taxes included

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Abdullah B.

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

3 weeks ago