1. ആമുഖം
Thank you for choosing the INKBIRDPLUS PTH-9D Indoor 3-in-1 Carbon Monoxide Monitor. This device is designed to accurately detect carbon monoxide (CO) concentration, temperature, and relative humidity in your environment. It utilizes a high-precision NDIR sensor for reliable CO detection and provides visual and audible alerts for elevated CO levels. Please read this manual thoroughly before use to ensure proper operation and safety.
Important Safety Note: Carbon monoxide is an invisible, odorless, and tasteless gas that can be fatal. This device is intended to assist in detecting CO but should not be used as a substitute for proper ventilation, maintenance of fuel-burning appliances, or professional CO detection systems. Always follow local safety guidelines and regulations.

Image 1.1: The INKBIRDPLUS PTH-9D monitor shown in diverse environments such as winter camping, inside a car, and next to a wood-burning stove, emphasizing its role in preventing carbon monoxide poisoning in these scenarios.
2. ഉൽപ്പന്നം കഴിഞ്ഞുview
2.1 പാക്കേജ് ഉള്ളടക്കം
- INKBIRDPLUS PTH-9D Carbon Monoxide Monitor
- യുഎസ്ബി ടൈപ്പ്-സി ചാർജിംഗ് കേബിൾ
- ഉപയോക്തൃ മാനുവൽ

Image 2.1: The INKBIRDPLUS PTH-9D monitor, a USB Type-C charging cable, and the printed user manual, representing the complete package contents.
2.2 ഉപകരണ ഘടകങ്ങൾ

Image 2.2: A detailed diagram of the PTH-9D monitor, highlighting key components such as the buzzer, battery level indicator, CO display, temperature display, humidity display, Type-C charging port, and hanging hole.
- ബസർ: Emits an audible alarm when CO levels exceed the set threshold.
- ബാറ്ററി ലെവൽ ഇൻഡിക്കേറ്റർ: നിലവിലെ ബാറ്ററി ചാർജ് നില പ്രദർശിപ്പിക്കുന്നു.
- CO Display: Shows the carbon monoxide concentration in parts per million (ppm).
- താപനില പ്രദർശനം: അന്തരീക്ഷ ഊഷ്മാവ് കാണിക്കുന്നു.
- ഹ്യുമിഡിറ്റി ഡിസ്പ്ലേ: Shows the relative humidity percentage.
- ടൈപ്പ്-സി ചാർജിംഗ് പോർട്ട്: For connecting the USB Type-C cable to charge the device.
- തൂങ്ങിക്കിടക്കുന്ന ദ്വാരം: Allows for wall-mounting the device.
3. സജ്ജീകരണം
3.1 പ്രാരംഭ ചാർജിംഗ്
Before first use, fully charge the device. Connect the provided USB Type-C cable to the charging port on the device and plug the other end into a standard 5V=1A USB power adapter (not included). The charging time is approximately 4-5 hours, providing a working time of about 90 hours on a full charge.

Image 3.1: The PTH-9D monitor being charged via its Type-C port, connected to a wall outlet, demonstrating the charging process.
3.2 പ്ലേസ്മെൻ്റ്
The PTH-9D monitor can be placed on a flat surface, such as a table or desk, or mounted on a wall using the integrated hanging hole. Ensure the device is placed in an area where air circulates freely and is not obstructed by furniture or curtains. Avoid placing it near vents, windows, or direct heat sources.

Image 3.2: A close-up of the hanging hole on the rear of the PTH-9D monitor, illustrating how it can be used for wall installation.
4. പ്രവർത്തന നിർദ്ദേശങ്ങൾ
4.1 പവർ ഓൺ/ഓഫ്
To power on the device, press and hold the power button (usually located on the side or top) for a few seconds until the display illuminates. To power off, press and hold the power button again until the display turns off.
4.2 വിവരങ്ങൾ പ്രദർശിപ്പിക്കുക
The device's display provides real-time readings for carbon monoxide concentration, temperature, and relative humidity. It also shows the battery level and a visual indicator for CO air quality.

Image 4.1: The main display of the PTH-9D monitor, showing a CO reading of '0000 ppm', a temperature of 69°F, and 42% humidity, along with battery and signal indicators.
4.3 Carbon Monoxide Detection and Alarm
The PTH-9D uses a highly accurate NDIR (Non-Dispersive Infrared) sensor to detect carbon monoxide concentration every 2 seconds. The device provides visual and audible indications based on detected CO levels:
- 0-99 പിപിഎം: Green indicator light (Normal/Good air quality).
- 100-149 പിപിഎം: Yellow indicator light (Warning/Moderate air quality).
- 150-500 പിപിഎം: Red indicator light (Dangerous/Poor air quality).
When the CO concentration exceeds 200 ppm, the device will activate an audible alarm to alert you to potentially dangerous conditions.

Image 4.2: A visual representation of the CO 3-color light indicator, showing how the device signals Normal, Warning, and Dangerous carbon monoxide levels with corresponding colors and smiley/frown faces.
4.4 ബാക്ക്ലൈറ്റ് ഫംഗ്ഷൻ
The device features a backlight that can be turned on or off. This allows you to monitor CO concentration in various lighting conditions without disturbing sleep. Refer to the device's buttons (if any are present beyond the power button) for specific instructions on toggling the backlight.
5. പരിപാലനം
5.1 വൃത്തിയാക്കൽ
To clean the device, gently wipe the exterior with a soft, dry cloth. Do not use abrasive cleaners, solvents, or immerse the device in water. Ensure no liquid enters the ventilation holes or charging port.
5.2 ബാറ്ററി കെയർ
To prolong battery life, avoid fully discharging the device frequently. Recharge the device when the battery indicator shows low power. If storing the device for an extended period, charge it to approximately 50% and recharge every few months.
6. പ്രശ്നപരിഹാരം
If you encounter any issues with your INKBIRDPLUS PTH-9D monitor, please refer to the following common problems and solutions:
- ഉപകരണം ഓണാക്കുന്നില്ല: Ensure the device is fully charged. Connect it to a power source using the provided USB Type-C cable and allow it to charge for at least 30 minutes before attempting to power it on again.
- Inaccurate CO readings: Ensure the device is placed in an area with good air circulation and away from direct drafts, vents, or sources of combustion. Allow the device to stabilize for a few minutes after powering on. If readings remain consistently unusual, contact customer support.
- അപ്രതീക്ഷിതമായി അലാറം മുഴങ്ങുന്നു: Check the CO concentration displayed on the screen. If the alarm sounds and the CO level is high, evacuate the area immediately and seek fresh air. If the CO level is low and the alarm sounds, try restarting the device.
- Display is dim or not visible: Check the battery level and recharge if necessary. Ensure the backlight function is enabled if operating in low-light conditions.
7 സ്പെസിഫിക്കേഷനുകൾ
| ഫീച്ചർ | സ്പെസിഫിക്കേഷൻ |
|---|---|
| മോഡൽ നമ്പർ | PTH-9D |
| ബ്രാൻഡ് | INKBIRDPLUS |
| CO Measurement Range | 0 പിപിഎം ~ 500 പിപിഎം |
| താപനില അളക്കൽ ശ്രേണി | -10 ° C ~ 40 ° C (14 ° F ~ 104 ° F) |
| ഈർപ്പം അളക്കുന്നതിനുള്ള ശ്രേണി | 20% ~ 80% RH |
| സെൻസർ തരം | നോൺ-ഡിസ്പേഴ്സീവ് ഇൻഫ്രാറെഡ് (NDIR) |
| അലാറം തരം | കേൾക്കാവുന്ന |
| പവർ ഉറവിടം | കോർഡഡ് ഇലക്ട്രിക് (യുഎസ്ബി ടൈപ്പ്-സി) |
| ബാറ്ററി ശേഷി | 2400 mAh (Built-in lithium battery) |
| ഇൻപുട്ട് പാരാമീറ്റർ | 5V === 1A |
| ചാർജിംഗ് സമയം | ഏകദേശം 4-5 മണിക്കൂർ |
| ജോലി സമയം | ഏകദേശം 90 മണിക്കൂർ |
| ഇനത്തിൻ്റെ ഭാരം | 322 ഗ്രാം |
| പാക്കേജ് അളവുകൾ | 13.79 x 9.91 x 4.9 സെ.മീ |

Image 7.1: The PTH-9D monitor displaying its readings, accompanied by text detailing its measurement ranges for carbon monoxide, temperature, and humidity.
8. വാറൻ്റിയും പിന്തുണയും
INKBIRDPLUS products are manufactured with high-quality standards. For warranty information, technical support, or any questions regarding your PTH-9D monitor, please contact the manufacturer directly. You can find contact details on the product packaging or through the official INKBIRDPLUS webസൈറ്റ്.
Manufacturer: Protech International Group Co., Ltd.
ഇമെയിൽ: support@inkbird.com
For additional support, please refer to the contact information provided in the included user manual or visit the INKBIRDPLUS official webസൈറ്റ്.





