---
product_id: 489479228
title: "INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C)"
brand: "inkbirdplus"
price: "€ 325.16"
currency: EUR
in_stock: false
reviews_count: 5
category: "Inkbirdplus"
url: https://www.desertcart.gr/products/489479228-inkbirdplus-indoor-co2-detector-air-quality-monitor-tester-for-carbon
store_origin: GR
region: Greece
---

# 3-stage CO2 alarm 2400mAh long battery Temp & Humidity sensing INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C)

**Brand:** inkbirdplus
**Price:** € 325.16
**Availability:** ❌ Out of Stock

## Summary

> 🌬️ Breathe smarter, live safer — your indoor air’s new best friend!

## Quick Answers

- **What is this?** INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C) by inkbirdplus
- **How much does it cost?** € 325.16 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/489479228-inkbirdplus-indoor-co2-detector-air-quality-monitor-tester-for-carbon)

## Best For

- inkbirdplus enthusiasts

## Why This Product

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

## Key Features

- • **Vibrant LED Display:** Large, clear screen makes reading air quality data quick and intuitive, even on the go.
- • **Effortless Calibration:** One-step calibration ensures pinpoint accuracy, keeping your data reliable and actionable.
- • **Smart 3-Level CO2 Alarm:** Customizable alerts warn you before air quality reaches dangerous levels—never be caught off guard.
- • **Versatile & Portable Design:** Compact with a hanging hole—perfect for grow tents, wine cellars, offices, cars, and more.
- • **Real-Time Air Quality Insight:** Instantly monitor CO2, temperature, and humidity for a healthier indoor environment.

## Overview

The INKBIRDPLUS Indoor CO2 Detector (PTH-9C) is a multifunctional air quality monitor that accurately measures carbon dioxide levels, temperature, and relative humidity. Featuring a 3-stage CO2 alarm system with customizable sound alerts, a long-lasting 2400mAh battery, and easy calibration, it’s designed for diverse indoor environments like grow tents, wine cellars, homes, and vehicles. Its large LED display and portable design make it an essential tool for proactive air quality management.

## Description

Nowadays, it’s hard to lead a safe and healthy life without intelligent gadgets as some dreadful and fatal things like carbon dioxide are odorless, colorless, and hard to be aware of. A place with a high-level concentration of carbon dioxide may pose a potentially deadly threat. Therefore, we need a carbon dioxide detector to keep a deep insight into the air quality of our living environment.

Review: Misleading product description
Review: Great way to test your indoor air quality.

## Features

- 🏕️🏕️【PREMIUM DETECTOR】 This multifunctional air quality monitor can accurately detect the current CO2 concentration, temperature, and humidity in the air. It can help you understand indoor air quality at a glance.
- ⏰⏰【CO2 CONCENTRATION STAGE & SOUND ALARM】 This CO2 detector is designed with 3 stages of CO2 concentration—normal stage (400-700 ppm), warning stage (700-1500 ppm), and dangerous stage (1500-5000 ppm). It will alarm you when the detected CO2 concentration is beyond the safe value you customized.
- 🛣️🛣️【CONVENIENT CALIBRATION】 To ensure the accuracy of measurement, this CO2 monitor supports the calibration function. Press three buttons at the same time in an open environment and let it stand for 200 seconds to calibrate this CO2 meter easily. This CO2 detector uses the NDIR CO2 sensor.
- 🔋🔋【LONG BATTERY STANDBY】 A 2400 mAh lithium battery is embedded inside the indoorCO2 monitor, supporting a long time of continuous use, before it adopts a large and distinct LED screen for ease for temperature or data viewing. display based on your need.
- 🚗🚗【WIDE APPLICATION】 A hanging hole is designed on the back of this portable CO2 detector so that you can hang it up to the wall for easy viewing. The indoor CO2 meter for grow tents is ideal for use in grow room, offices, kitchens, schools, kitchens, schools cellars, and cars.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MRX4F12 |
| Alarm | Audible |
| Brand | INKBIRDPLUS |
| Customer Reviews | 3.8 out of 5 stars 392 Reviews |
| Item height | 3.54 inches |
| Manufacturer | INKBIRDPLUS |
| Model Number | PTH-9C (3-in-One) |
| Operating Humidity | 95 percent |
| Operating humidity | 95 percent |
| Power source | Battery Powered |
| Sensor Type | Non Dispersion Sensor |
| Sensor type | Non Dispersion Sensor |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** INKBIRDPLUS
- **Power source:** Battery Powered
- **Alarm:** Audible
- **Operating humidity:** 95 percent
- **Sensor type:** Non Dispersion Sensor
- **Manufacturer:** INKBIRDPLUS

## Images

![INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C) - Image 1](https://m.media-amazon.com/images/I/61FYwIhWhvL.jpg)
![INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C) - Image 2](https://m.media-amazon.com/images/I/61So8SU6XCL.jpg)
![INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C) - Image 3](https://m.media-amazon.com/images/I/718dXQm7EbL.jpg)
![INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C) - Image 4](https://m.media-amazon.com/images/I/71LUQtjZ0iL.jpg)
![INKBIRDPLUS Indoor CO2 Detector, Air Quality Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, Indoor CO2 Monitor with Alarm, for Grow Tents, Wine Cellars, Homes, Cars(PTH-9C) - Image 5](https://m.media-amazon.com/images/I/71QxSbnqVbL.jpg)

## Questions & Answers

**Q: Is it possible to disable the high co2 ppm alarm? i need it to control co2 levels on a mushroom grow tub, so co2 levels will be high**
A: Had this one for about 2 weeks, u,nable to set ppm alarm and it's wildly off compared to the my other professional CO2 detectors(500 ppm).  Inaccurate readings, I do not recommend this product.

**Q: How often are you supposed to calibrate this?  Readings seem irratic**
A: Never calibrate, the CO2 in the room never changes. Temperature readings were inaccurate when compared to dedicated hydrometers. I am highly skeptical given how far off the other readings are. 
It's only rated 4, you should read the negative reviews. It's about the safety of you and your family, look at other brands.

**Q: Does it work while plugged in for uninterrupted use?**
A: Yes, it runs while plugged in. Once charged it seems to run for about 12 hours before the battery gets very low.

**Q: Does it have an auto-calibration? How often is the value refreshed?**
A: The instructions say to take it outside in a well ventilated place, press a sequence of buttons, and wait as it counts down. I am not sure how long it lasts. However when I leave my 14th floor window open and leave the room for a long time it goes down to 409 ppm. That’s pretty close to the current global value of 412.

## Customer Reviews

### ⭐ Misleading product description
*by M***I on 29 December 2025*



### ⭐⭐⭐⭐⭐ Great way to test your indoor air quality.
*by J***F on 17 September 2023*



### ⭐⭐⭐⭐⭐ Easy to use CO2 monitor
*by B***H on 19 October 2022*



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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-23*