Product Overview
The INKBIRDPLUS Portable CO2 Detector (PTH-10C) is a compact and highly accurate device designed to monitor carbon dioxide levels in various indoor environments. Utilizing advanced NDIR (Non-Dispersive Infrared) sensing technology, it provides precise and stable readings, ensuring reliable air quality assessment. Its full-color LCD display offers clear, easy-to-read information, complemented by a user-friendly interface.

Key Features
- High-Quality NDIR Sensor: Employs advanced Non-Dispersive Infrared technology for high precision, strong anti-interference, and excellent stability in CO2 detection.
- Tri-Color CO2 Concentration Level Indicators: Features a visual indicator system with green (400-699ppm for good), yellow (700-1499ppm for medium), and red (1499-5000ppm for danger) lights for quick air quality assessment.
- Audible Alerts & Custom Alert Values: An alarm sounds when CO2 concentration exceeds 1500ppm, with the option to customize the alarm threshold.
- Portable and Long-Lasting: Small, lightweight design with an included lanyard for easy carrying. Equipped with a built-in 1000mAh lithium battery providing approximately 72 hours of battery life on a 3-hour charge.
- HD Full-Color LCD Display: Offers a clear and eye-protective display. Automatically enters energy-saving ECO mode after 5 minutes of inactivity.
- USB Rechargeable Design: Conveniently rechargeable via USB-C.


Setup Guide
- Charging the Device: Before first use, fully charge the CO2 detector using the provided 2m USB-C charging cable. The built-in 1000mAh lithium battery can be fully charged within 3 hours and offers approximately 72 hours of continuous use.
- Power On/Off: Long press the main button on the device to power it on or off. The full-color LCD display will illuminate upon activation.
- Initial Calibration: For accurate readings, it is highly recommended to manually calibrate the device upon first use. Place the detector in an open and uninhabited environment (e.g., outdoors in fresh air) and long press the button until the screen displays "CAL". The device will enter a 200-second manual calibration mode. Ensure the environment is well-ventilated during this process.


Operating Instructions
Once powered on and calibrated, the CO2 detector will immediately begin monitoring the air quality. The full-color LCD display shows the current CO2 concentration in parts per million (ppm).
Understanding CO2 Levels:
- Green Light (Good): 400-699 ppm. Indicates good air quality.
- Yellow Light (Medium): 700-1499 ppm. Suggests moderate CO2 levels; consider ventilation.
- Red Light (Danger): 1499-5000 ppm. Indicates high CO2 levels; immediate ventilation is recommended.
When the detected CO2 concentration exceeds 1500ppm, the device will emit an audible alarm to alert you. The alarm value can be customized to suit your preferences, or the alarm function can be turned off if desired. Refer to the included user manual for detailed instructions on customizing alarm settings.

Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.
- Storage: Store the detector in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
- Battery Care: To prolong battery life, avoid fully discharging the device frequently. Recharge it when the battery indicator is low.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Inaccurate Readings | Device not calibrated or placed in an unsuitable environment. | Perform manual calibration in an open, uninhabited area. Ensure proper ventilation. |
| Device Not Powering On | Low battery or charging issue. | Charge the device fully using the provided USB-C cable. Check the charging cable and adapter. |
| Alarm Not Sounding | Alarm function is turned off or alarm value is set too high. | Check alarm settings in the user manual to ensure it is enabled and set to an appropriate threshold. |
| Display is Dim/Off | Device is in ECO mode or battery is low. | Press any button to exit ECO mode. Charge the device if the battery is low. |
Technical Specifications
| Specification | Value |
|---|---|
| Brand | INKBIRDPLUS |
| Model Number | PTH-10C-US |
| Sensor Type | NDIR (Non-Dispersive Infrared) |
| CO2 Detection Range | 400-5000 ppm |
| Power Source | Battery Powered (1000mAh Lithium Ion) |
| Battery Life | Approx. 72 hours |
| Charging Time | Approx. 3 hours |
| Charging Port | USB-C |
| Display | Full-Color LCD |
| Alarm | Audible (customizable) |
| Item Weight | 0.31 Pounds (approx. 5 ounces) |
| Product Dimensions | 2.76 x 2.95 x 1.18 inches |
Warranty and Customer Support
INKBIRDPLUS products are designed for reliability and performance. For specific warranty details, including coverage period and terms, please refer to the warranty card included in your product packaging or visit the official INKBIRDPLUS website.
Should you encounter any issues or have questions regarding your Portable CO2 Detector, please contact INKBIRDPLUS customer support. Our dedicated team is available to assist you with troubleshooting, technical inquiries, and any other product-related concerns.
Thank you for choosing INKBIRDPLUS. We are committed to providing high-quality products and excellent customer service.





