---
product_id: 379489347
title: "Indoor Air Quality 9999ppm Digital Carbon Dioxide Temperature Humidity NDIR Sensor IAQ WB DP Tester"
brand: "gain express"
price: "$313.85"
currency: USD
in_stock: true
reviews_count: 5
category: "Gain Express"
url: https://www.desertcart.us/products/379489347-indoor-air-quality-9999ppm-digital-carbon-dioxide-temperature-humidity-ndir
store_origin: US
region: United States of America
---

# Audible alarm for CO2 threshold Dual power: Battery & 9V adapter Triple display: CO2, Temp, Humidity Indoor Air Quality 9999ppm Digital Carbon Dioxide Temperature Humidity NDIR Sensor IAQ WB DP Tester

**Brand:** gain express
**Price:** $313.85
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe Smart, Lead Confidently: The Ultimate Indoor Air Quality Guardian

## Quick Answers

- **What is this?** Indoor Air Quality 9999ppm Digital Carbon Dioxide Temperature Humidity NDIR Sensor IAQ WB DP Tester by gain express
- **How much does it cost?** $313.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/379489347-indoor-air-quality-9999ppm-digital-carbon-dioxide-temperature-humidity-ndir)

## Best For

- gain express enthusiasts

## Why This Product

- Trusted gain express brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Data-Driven Decisions:** Optional PC software enables real-time logging and analysis, empowering smarter air quality management.
- • **Stay Alert, Stay Safe:** Instant sound alarm triggers when CO2 levels spike, ensuring your indoor environment never compromises your health.
- • **Flexible Power Options:** Runs on included batteries or 9V adapter—perfect for on-the-go professionals or fixed installations.
- • **Precision You Can Trust:** Stable NDIR sensor delivers ultra-accurate CO2 readings up to 9999ppm with 1ppm resolution.
- • **All-in-One Air Quality Dashboard:** Monitor CO2, temperature, and humidity simultaneously with crystal-clear triple displays.

## Overview

The GAIN EXPRESS Indoor Air Quality Tester combines advanced NDIR CO2 sensing with temperature and humidity monitoring in a sleek, portable device. Featuring a triple digital display, audible alarms, and flexible power options, it’s designed for professionals who demand precise, real-time indoor environment data. Ideal for homes, labs, and offices, it supports optional PC connectivity for comprehensive air quality tracking.

## Description

Buy GAIN EXPRESS Indoor Air Quality 9999ppm Digital Carbon Dioxide Temperature Humidity NDIR Sensor IAQ WB DP Tester online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: まだ使ってないが試したら使いやすそうだ
Review: mide bien y esta bien de precio

## Features

- Triple displays of CO2 level, Temperature (°F/ °C) and Humidity (Air, Wet Bulb, or Dew Point Info are all available)
- Stable NDIR Sensor for CO2 Detection. Ideal indoor air quality meter for home, laboratories, hotels, etc
- Sound Warning Alarm notifies operator when CO2 levels reach or exceed a preset threshold
- Power Supplied by Battery (Included) or 9V Adaptor . Optional Software CD for PC Connection Online Logging is also possible.
- Measuring Range:CO2: 0~9999ppm,(2001~9999 out of scale), Resolution : 1ppm,0.1°C/°F, 0.1%RH

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01966BZDY |
| ASIN  | B01966BZDY |
| Alarm | Audible |
| Batteries  | 4 AA batteries required. |
| Brand | GAIN EXPRESS |
| Color | Yellow |
| Customer Reviews | 4.5 4.5 out of 5 stars (272) |
| Customer reviews | 4.5 4.5 out of 5 stars (272) |
| Date First Available  | 31 March 2016 |
| Is Discontinued By Manufacturer  | No |
| Item Weight | 200 Grams |
| Item model number  | A017755 |
| Manufacturer | Gain Express Holdings Ltd. |
| Manufacturer  | Gain Express Holdings Ltd. |
| Model Number | A017755 |
| Operating Humidity | 95 percent |
| Power Source | Battery Powered |
| Product Dimensions  | 7.01 x 5.51 x 21.01 cm; 200 g |
| Product Style | Modern |
| Sensor Type | Non Dispersive Infrared |
| UPC | 600316560665 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** GAIN EXPRESS
- **Colour:** Yellow
- **Item weight:** 200 Grams
- **Power source:** Battery Powered
- **Style:** Modern

## Images

![Indoor Air Quality 9999ppm Digital Carbon Dioxide Temperature Humidity NDIR Sensor IAQ WB DP Tester - Image 1](https://m.media-amazon.com/images/I/71+eOoxRUgL.jpg)

## Questions & Answers

**Q: Can you connect a hose for scientific experiments?**
A: No.

**Q: what is the country of origin?**
A: Made it China, but it seems to be an accurate measurement.

**Q: Do you sell the software and hardware for data collection separately for this unit?**
A: Yes, you can buy the software and cable from the link below.

ASIN: B01BWJIRMK
URL: https://www.amazon.com/dp/B01BWJIRMK?ref=myi_title_dp

**Q: How accurate is the co2 sensor?**
A: Very

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by ピ***マ on 15 January 2026*

まだ使ってないが試したら使いやすそうだ

### ⭐⭐⭐⭐⭐ Review
*by J***L on 29 October 2025*

mide bien y esta bien de precio

### ⭐⭐⭐⭐⭐ Review
*by S***8 on 27 March 2026*

Portable CO2 Meter Handheld CO2 Detector Monitor 0~9999ppm Product arrived quickly and was brand new. I put in the 4 batteries and hit the top left start button, and it fired right up. This CO2 detector is a game changer. I thought the office had a Carbon Monoxide problem. After buying a expensive CO detector [everyone should have a CO detector of some type] I found out with this device it was CO2 that was the problem. The room was running at 800 ppm to 900 ppm and thats when a absolute brain fog would hit. We ended opening up some windows limiting the use of the gas stove and brought in fans for circulation. The PPM is now about 500 ppm sometimes around 430 ppm which is a huge difference. I have not messed with any of the setting so far no need to. Overall excellent product! If you are having a brain fog or feel a little strange and lethargic in the house/room or office it may be high CO2 levels. This device will help determine if that is the issue, and hopefully help you solve it.

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-21*