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

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

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Description

🌬️ Breathe smarter, work safer — the pro’s choice for air quality mastery!

DATA DRIVEN INSIGHTS - Optional PC software enables online logging and detailed analysis to optimize your air quality management.
FLEXIBLE POWER OPTIONS - Use included batteries or plug in with a 9V adapter for uninterrupted monitoring anywhere.
INSTANT ALERTS WITH SOUND ALARM - Stay safe and proactive with audible warnings when CO2 levels exceed your preset limits.
ALL IN ONE AIR QUALITY DASHBOARD - Monitor CO2, temperature, and humidity simultaneously for total indoor environment control.
PRECISION NDIR SENSOR TECHNOLOGY - Reliable, stable CO2 detection up to 9999ppm with 1ppm resolution—perfect for professional settings.

The Gain Express Handheld CO2 Meter features a high-precision NDIR sensor with a wide 0-9999ppm measuring range, triple displays for CO2, temperature, and humidity, and an audible alarm to alert users of unsafe CO2 levels. Powered by battery or 9V adapter, it supports optional PC connectivity for data logging, making it ideal for indoor air quality monitoring in homes, labs, and professional environments.

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

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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54904 som

Duties & taxes included

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago