






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






| 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 |
M**I
Misleading product description
J**F
Great way to test your indoor air quality.
B**H
Easy to use CO2 monitor
T**T
It monitors the air quality for carbon dioxide, temperature and relative humidity.
M**K
Not worth a penny
Trustpilot
1 week ago
2 months ago