Introduction
Thank you for choosing the Protmex PTH-10D Portable 3-in-1 Carbon Monoxide Detector. This device is designed to provide continuous monitoring of carbon monoxide (CO) levels, temperature, and humidity, ensuring a safer environment for you and your family. Its portable and rechargeable design makes it ideal for various settings, including homes, RVs, camping, and travel.
Safety Information
- This device is intended for monitoring carbon monoxide, temperature, and humidity. It is not a substitute for proper ventilation or maintenance of fuel-burning appliances.
- Do not block the sensor openings on the device.
- Keep the device away from direct heat sources, excessive humidity, and strong electromagnetic fields.
- Regularly check the device for proper operation and battery level.
- In case of a CO alarm, immediately move to fresh air and contact emergency services.
Product Features
- 3-in-1 Monitoring: Detects Carbon Monoxide (CO), Temperature, and Humidity.
- Wide CO Detection Range: 0-500 PPM.
- Rechargeable Battery: Built-in 1000mAh battery for extended use.
- Clear LCD Display: Large backlit display shows real-time readings.
- Color-Coded Alerts: Visual indicators (Green/Yellow/Red) for CO levels.
- Audible Alarm: Alerts users to dangerous CO concentrations.
- Portable Design: Compact and lightweight for easy transport.
- Magnetic Adsorption: Convenient mounting option.
Package Contents
- Protmex PTH-10D Carbon Monoxide Detector
- USB Charging Cable
- User Manual
Device Overview

Front view of the Protmex PTH-10D detector, highlighting the digital display for CO, temperature, and humidity readings.

Diagram showing the compact dimensions of the detector: 70mm width, 76mm height, and 30mm depth.
The device features a central LCD screen displaying real-time CO concentration in PPM, current temperature in Celsius, and relative humidity percentage. Surrounding the display is a color-coded ring indicating safety levels. A single button below the screen controls power and display modes. The top includes a loop for attaching a lanyard or carabiner, and the back features magnetic adsorption for easy placement.
Setup
- Initial Charge: Before first use, fully charge the device using the provided USB cable. Connect the cable to the charging port on the device and a standard USB power adapter (not included). The battery indicator on the display will show charging status.
- Power On/Off: Press and hold the power button for 3 seconds to turn the device on or off.
- Placement: Place the detector in an area where carbon monoxide may be present, such as near fuel-burning appliances, in an RV, tent, or cabin. Ensure the sensor openings are unobstructed. For optimal CO detection, place it at breathing height.
Operating Instructions
Understanding the Display

The display shows the current CO concentration in parts per million (PPM), temperature, and humidity. The surrounding ring changes color based on CO levels.

Detailed view of the temperature and humidity readings on the detector's screen.
- CO (ppm): Displays the current carbon monoxide concentration.
- Temperature: Shows the ambient temperature in Celsius.
- Humidity: Indicates the relative humidity percentage.
- Battery Indicator: Shows the remaining battery life.
Color-Coded Alarm Levels

Visual representation of the CO alarm thresholds: Green for safe, Yellow for warning, and Red for danger.
- Green (0-49 ppm): Indicates safe CO levels.
- Yellow (50-99 ppm): Warning level. An audible alarm may sound, and the device will flash yellow. Take precautions and ventilate the area.
- Red (100+ ppm): Danger level. A loud audible alarm will sound, and the device will flash red. Immediately evacuate the area and seek fresh air.
Video Demonstrations
Video demonstrating the features and portability of the Protmex 3-in-1 CO detector (55 seconds).
Video showcasing the Protmex 3-in-1 carbon monoxide detector in various usage scenarios (42 seconds).
Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure no liquid enters the sensor openings.
- Battery Care: Recharge the device when the battery indicator is low. Avoid fully depleting the battery frequently to prolong its lifespan. If storing for an extended period, charge it periodically.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on | Low or no battery charge | Charge the device fully using the USB cable. |
| Inaccurate CO/Temp/Humidity readings | Sensor obstruction, extreme environmental conditions, or device malfunction. | Ensure sensor openings are clear. Move the device to a stable environment. If issues persist, contact support. |
| Audible alarm sounds frequently without apparent CO source | High CO levels are genuinely present, or false alarm due to strong fumes/chemicals. | Evacuate to fresh air immediately. If it's a false alarm, ventilate the area and ensure no strong odors are near the device. |
| Battery drains quickly | Frequent alarms, continuous backlight use, or aging battery. | Reduce exposure to CO sources. Ensure device is fully charged. If battery life significantly degrades, consider contacting support for replacement options. |
Specifications
| Parameter | Value |
|---|---|
| Model Number | PTH-10D |
| Brand | Protmex |
| CO Detection Range | 0-500 PPM |
| Power Source | Li-rechargeable Battery Powered |
| Battery Capacity | 1000mAh (approx. 60-120 hours continuous operation) |
| Product Dimensions | 1.18"D x 2.99"W x 2.76"H (30mm D x 76mm W x 70mm H) |
| Item Weight | 0.37 Pounds (approx. 5.9 ounces / 167g) |
| Alarm Type | Audible |
| Operating Humidity | 0%-95% |
Warranty and Support
Protmex products are designed for reliability and performance. This device comes with a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty details, please refer to the product packaging or contact our customer support.
If you encounter any issues or have questions regarding your Protmex PTH-10D detector, please contact our customer support team:
- Email: support@protmex.com
- Website: www.protmex.com/support
Please have your model number (PTH-10D) and purchase information ready when contacting support.





