1. Sikkerhedsoplysninger
Please read all instructions carefully before using the INKBIRDPLUS PTH-9C Indoor Air Quality Monitor. Retain this manual for future reference.
- Udsæt ikke enheden for ekstreme temperaturer, direkte sollys eller høj luftfugtighed.
- Undgå at tabe eller udsætte enheden for kraftige stød.
- Hold enheden væk fra vand og andre væsker.
- Forsøg ikke selv at skille enheden ad eller reparere den. Kontakt kvalificeret personale for service.
- Brug kun det medfølgende USB-kabel til opladning.
- Ensure proper ventilation when calibrating the device.
2. Produktet er slutview
The INKBIRDPLUS PTH-9C is a versatile 3-in-1 indoor air quality monitor designed to accurately detect Carbon Dioxide (CO2) levels, temperature, and humidity. It features a clear LCD screen with a multi-color display for easy interpretation of air quality data and includes customizable alarm functions.
Nøglefunktioner:
- 3-i-1 multifunktion: Monitors Carbon Dioxide (CO2), Temperature, and Humidity.
- Højpræcisionssensorer: Equipped with a high-precision infrared sensor for CO2 and a built-in high-performance chip for accurate readings.
- 3-Color Smart Alarm: Visual indication of CO2 concentration stages (Normal, Warning, Dangerous) with customizable alarm thresholds.
- USB genopladelig: Features a 2400 mAh lithium battery, recommended for continuous use while charging.
- Stor LCD-skærm: Provides clear and easy-to-read data display with selectable temperature units (℃/℉).
- Alsidig placering: Includes a hanging hole for wall mounting and can be placed on flat surfaces.
Produktkomponenter:

Figur 1: Forside view of the INKBIRDPLUS PTH-9C monitor displaying CO2, temperature, and humidity readings.

Figur 2: Tilbage view of the monitor showing the power button, UP/DOWN buttons, hanging hole, and battery compartment.
3. Opsætning
3.1 Første opladning og tænding
- Connect the provided USB cable to the device's USB port and plug the other end into a 5V-1A USB power adapter (not included) or a computer USB port.
- The device will automatically power on and begin displaying readings. It is recommended to keep the device plugged in for continuous operation due to the 2400 mAh lithium battery powering three sensors.
- Allow the device to stabilize for approximately 30 seconds to obtain initial accurate readings.

Figure 3: The monitor connected via USB for charging and continuous power.
3.2 CO2-kalibrering
For optimal accuracy, especially upon first use, calibrate the CO2 sensor in an open, well-ventilated environment (e.g., outdoors).
- Sørg for, at enheden er slukket.
- Take the device to an outdoor area with fresh air.
- Simultaneously press and hold the three buttons on the device for 200 seconds. The display will indicate calibration in progress.
- Once calibration is complete, the device will return to normal operation.

Figure 4: Illustration of pressing three buttons for CO2 calibration.
4. Betjeningsvejledning
4.1 Vis information
The large LCD screen displays real-time readings for CO2 concentration, temperature, and humidity. A multi-color bar visually indicates the CO2 level status.
- CO2 (ppm): Carbon Dioxide concentration in parts per million.
- Temperature (℃/℉): Omgivelsestemperatur.
- Luftfugtighed (%): Relativ luftfugtighed.
- Historiegraf: Displays historical CO2 data over time.

Figur 5: Detaljeret view of the monitor's display showing all measured parameters.
4.2 CO2 Concentration Stages and Alarm
Enheden kategoriserer CO2-niveauer i tre kategoriertages, indicated by color changes on the display and an audible alarm when thresholds are exceeded:
- Normal Stage: 400-700 ppm (Green indication)
- Warning Stage: 700-1500 ppm (Yellow indication)
- Dangerous Stage: 1500-5000 ppm (Red indication)

Figure 6: Visual representation of CO2 concentration levels and their corresponding safety stages.
4.3 Customizing Alarm Thresholds
You can customize the CO2 concentration value at which the alarm will trigger.
- Double-press the designated button (refer to Figure 2 for button layout) to enter the alarm setting mode.
- Use the UP/DOWN buttons to adjust the desired CO2 alarm value.
- Press the button again to confirm and save the setting.

Figure 7: The monitor indicating a CO2 warning alarm.
4.4 Ændring af temperaturenheder
To switch between Celsius (℃) and Fahrenheit (℉) for temperature display, press the appropriate button (usually labeled with ℃/℉ or similar, refer to Figure 2).
4.5 Backlight Control
The device's display backlight can be turned on or off. Refer to the button functions (Figure 2) for the specific button controlling the backlight.
5. Vedligeholdelse
- Rengør apparatet regelmæssigt med en blød, tør klud. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
- Ensure the ventilation holes are free from dust and debris to maintain accurate readings.
- Når enheden ikke er i brug i længere perioder, skal den opbevares et køligt og tørt sted.
6. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Unøjagtige CO2-aflæsninger | Enheden er ikke kalibreret eller placeret i et dårligt ventileret område. | Perform CO2 calibration in a fresh air environment. Ensure proper air circulation around the device. |
| Kort batterilevetid | Continuous use of sensors drains battery quickly. | Keep the device plugged in via USB for continuous operation. The battery is primarily for backup. |
| Alarmen lyder ikke | Alarm function is disabled or threshold is set too high. | Check alarm settings and ensure it is enabled. Adjust the alarm threshold to a suitable level. |
| Displayet er ikke synligt | Backlight is off or device is powered off. | Press the backlight button to turn it on. Ensure the device is powered on and charged. |
7. Specifikationer
| Feature | Detalje |
|---|---|
| Modelnummer | PTH-9C |
| Funktioner | CO2 Detection, Temperature, Humidity |
| CO2 Sensor Type | High-precision infrared sensor |
| CO2 Concentration Stages | Normal (400-700 ppm), Warning (700-1500 ppm), Dangerous (1500-5000 ppm) |
| Batteri | 2400 mAh lithium batteri |
| Strømkilde | Batteridrevet (USB genopladelig) |
| Vise | Stor LCD-skærm |
| Temperaturenheder | ℃ / ℉ selectable |
| Varens vægt | 306 gram |
| Pakkedimensioner | 14 x 10 x 5 cm |
| Fabrikant | INKBIRDPLUS |
8. Garanti og support
For warranty information, technical support, or any inquiries regarding your INKBIRDPLUS PTH-9C monitor, please refer to the contact information provided with your product packaging or visit the official INKBIRDPLUS webwebsted.





