---
product_id: 517896857
title: "INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A)"
brand: "inkbirdplus"
price: "$257.50"
currency: USD
in_stock: true
reviews_count: 5
category: "Inkbirdplus"
url: https://www.desertcart.us/products/517896857-inkbirdplus-6-in-1-indoor-air-quality-monitor-detects-co2
store_origin: US
region: United States of America
---

# Color LED display 3-stage AQI alarm 6-in-1 sensor suite INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A)

**Brand:** inkbirdplus
**Price:** $257.50
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A) by inkbirdplus
- **How much does it cost?** $257.50 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/517896857-inkbirdplus-6-in-1-indoor-air-quality-monitor-detects-co2)

## 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 Color LED Screen:** Clear, backlit display ensures you never miss a critical reading, day or night.
- • **Versatile & Portable Design:** Perfect for offices, grow tents, cellars, and more — hang it or place it anywhere for instant air insights.
- • **Comprehensive 6-in-1 Detection:** Monitor CO2, PM2.5, PM10, AQI, temperature, and humidity all in one sleek device.
- • **Smart Calibration for Accuracy:** Automatic CO2 recalibration keeps your data precise and reliable over time.
- • **Instant Alerts with 3-Stage AQI Alarm:** Stay ahead of air quality risks with audible warnings at normal, warning, and danger levels.

## Overview

The INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor (PTH-9A) delivers precise real-time tracking of CO2, PM2.5, PM10, AQI, temperature, and humidity. Featuring a vibrant color LED display and a 3-stage audible alarm system, it empowers professionals to maintain optimal indoor environments across diverse spaces like offices, grow tents, and cellars. Its smart calibration function ensures ongoing accuracy, while its portable design offers flexible placement options. Stay informed and proactive about your air quality with this essential tool.

## Description

INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, For Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A) Notes: 1. We recommend keeping the device connected to the power source during use. 2. If there is no power, the device will NOT be able to detect air quality. 3. Please note that the alarm value cannot be set.

Review: As advertised! - Accurate, very useful, especially the alarm function when air quality drops rapidly.
Review: Battery dies within a month - Battery died within a month. The fact that this item got a 3.8 star average review is telling. Most reviewers give a big benefit of the doubt so average review is usually above 4.5. That said, everything else I bought from Inkbird (sous vide, thermometers) are perfect.

## Features

- 6-in-1 Air Quality Monitor: INKBIRDPLUS 6-in-1 Indoor Monitor has built-in professional detection sensors, it can accurately detect the current CO2 concentration, PM2.5, PM10, AQI, temperature, and humidity in the air
- Three AQI Stages & Sound Alarm: This Air Quality detector is designed with 3 stages of AQI - normal mode (0-50), warning mode (51-100), and danger mode (101-500). When the AQI index exceeds 100, the detector will sound an alarm
- Calibration Function: After the device is turned off, take it to a ventilated place, and press and hold the three keys at the same time, the product will enter the automatic calibration state of carbon dioxide concentration value for 200 seconds
- Color LED Screen: The color display with backlight makes each value clear at a glance, and you can also check the time/date/year on the detector. This air quality meter also supports setting the current time, C°/F° switching
- Wide Application: This portable detector can detect air quality in bedrooms, living rooms, kitchens, cellars, cars, grow tents and more. With a hook design, it can be placed on the desktop or hung on the wall for easy viewing, is an ideal indoor air quality detector for our lives
- NOTE: We recommend that when using the detector for the first time, place the device in an open and uninhabited environment and manually calibrate it once to avoid inaccurate readings

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B7QG8D8R |
| Alarm | Audible |
| Brand | INKBIRDPLUS |
| Customer Reviews | 3.8 out of 5 stars 247 Reviews |
| Item Weight | 0.67 Pounds |
| Item weight | 0.67 Pounds |
| Manufacturer | INKBIRDPLUS |
| Model Number | PTH-9A Indoor Air Quality Monitor |
| Operating Humidity | 99 percent |
| Operating humidity | 99 percent |
| Power source | Battery Powered |
| Unit Count | 1.0 Count |

## Product Details

- **Alarm:** Audible
- **Brand:** INKBIRDPLUS
- **Item weight:** 304 g
- **Manufacturer:** INKBIRDPLUS
- **Operating humidity:** 99 percent
- **Power source:** Battery Powered

## Images

![INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A) - Image 1](https://m.media-amazon.com/images/I/71EUPB2LMQL.jpg)
![INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A) - Image 2](https://m.media-amazon.com/images/I/71PkOq3vhYL.jpg)
![INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A) - Image 3](https://m.media-amazon.com/images/I/71oTmjJSpGL.jpg)
![INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A) - Image 4](https://m.media-amazon.com/images/I/71nIJ8rPRSL.jpg)
![INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A) - Image 5](https://m.media-amazon.com/images/I/71d8qOx2l4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ As advertised!
*by M***L on 19 February 2026*

Accurate, very useful, especially the alarm function when air quality drops rapidly.

### ⭐ Battery dies within a month
*by J***G on 22 October 2025*

Battery died within a month. The fact that this item got a 3.8 star average review is telling. Most reviewers give a big benefit of the doubt so average review is usually above 4.5. That said, everything else I bought from Inkbird (sous vide, thermometers) are perfect.

### ⭐⭐⭐⭐⭐ Always good to monitor your air quality
*by T***S on 11 November 2025*

I’ve been using this air quality monitor mainly to keep an eye on air quality while 3D printing, and it’s been really solid so far. Setup was quick, basically turn on and good to go. and the display is bright, clear, and easy to read from across the room. It tracks CO2, PM2.5, PM10, and overall AQI, which is super helpful to see how things change during and after a print. The readings seem accurate and respond quickly when the printer starts running or when I open a window for ventilation. It’s nice having actual data instead of just guessing if the air’s getting stuffy or dusty. For anyone doing a lot of 3D printing or working in a small workshop, this little monitor gives some good peace of mind. Big plus it has USB-C charging port!

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-03*