1. Introduktion
The Gedsffati HD08-G-B is a combined gas and carbon monoxide (CO) detector designed for household use. This device continuously monitors the levels of carbon monoxide and various combustible gases, including natural gas, liquefied petroleum gas (LPG), methane (CH4), ethane (C2H6), propane (C3H8), and butane (C4H10). It features high-precision sensors for rapid and accurate detection, with a sensor lifespan of approximately 5 years. In addition to gas detection, the HD08-G-B also measures and displays ambient temperature and humidity.
This manual provides essential information for the proper setup, operation, and maintenance of your Gedsffati HD08-G-B detector to ensure its optimal performance and your safety.
2. Produktfunktioner
- Combined Detection: Monitors both carbon monoxide (CO) and combustible gases.
- High-Performance Sensors: Utilizes electrochemical and semiconductor resistance change principles for quick and accurate detection.
- Overvågning i realtid: Sensors operate every 2 seconds for near real-time detection.
- Multifunktionsskærm: Shows CO concentration, gas levels, temperature, and humidity.
- Hørbare og visuelle alarmer: Provides distinct alarms for different gas concentrations.
- Integreret genopladeligt batteri: 1000 mAh lithium battery provides backup power for approximately 8 hours during power outages.
- Plug and Play: Easy installation by simply plugging into a standard electrical outlet.
3. Opsætning og installation
The Gedsffati HD08-G-B detector is designed for simple installation. Follow these steps:
- Pak enheden ud: Tag forsigtigt detektoren ud af emballagen.
- Vælg en placering: Select a suitable location for installation. For optimal detection, place the detector in areas where gas leaks or CO accumulation are most likely, such as near gas appliances (stoves, water heaters) or in living areas. Avoid placing it directly above heat sources, near windows, or in areas with high humidity.
- Tilslut: Insert the detector directly into a standard AC 100-240V/50-60Hz electrical outlet. The device will automatically power on and begin monitoring.
- Indledende selvtest: Upon first power-up, the device may perform an automatic self-test. Observe the display for any error indicators.

Billede 1: Foran og bagpå view of the Gedsffati HD08-G-B detector, illustrating its compact design and plug for direct insertion into an electrical outlet.

Image 2: The Gedsffati HD08-G-B detector in operation, plugged into a wall socket, showcasing its real-time monitoring capabilities for CO and combustible gas concentrations.
4. Betjeningsvejledning
4.1. Knapfunktioner
The device features three control buttons on the front panel:
- H knap:
- Short press: Changes the screen brightness.
- O-knap:
- Short press: Initiates a self-test.
- Long press: Powers the device on or off.
- D knap:
- Short press: Toggles the buzzer (audible alarm) on or off.
- Long press: Changes the temperature unit (e.g., Celsius to Fahrenheit).

Billede 3: Detaljeret view of the detector's display and the three control buttons (H, O, D) located at the bottom, used for various settings and functions.
4.2. Alarmfunktioner
The device provides distinct visual and audible alarms based on detected gas concentrations:
4.2.1. Carbon Monoxide (CO) Alarm
- 0-50 ppm: No alarm. The CO icon on the display remains green.
- 51-200 ppm: The device emits an audible alarm every 3 minutes. The CO icon turns yellow and flashes.
- 201-999 ppm: The device emits a continuous audible alarm. The CO icon turns red and flashes.
4.2.2. Flammable Gas Alarm
- No Combustible Gas: No alarm. The green combustible gas icon flashes.
- Lav koncentration: The device emits an audible alarm every 3 minutes. The yellow combustible gas icon flashes.
- Medium Concentration: The device emits an audible alarm every 3 minutes. The orange combustible gas icon flashes.
- High Concentration: The device emits a continuous audible alarm. The red combustible gas icon flashes.

Image 4: The detector displaying an alarm condition, with CO levels at 225 PPM and gas detection, accompanied by visual and audible alerts to indicate potential danger.

Image 5: The detector in a normal operating state, indicated by a green light, showing low CO concentration (45 PPM) and normal gas levels. A short press on the 'O' button initiates a self-test.
4.3. Batteribackup
The Gedsffati HD08-G-B includes a built-in 1000 mAh lithium battery. In the event of a power outage, the device will automatically switch to battery power, providing approximately 8 hours of continuous operation. This ensures uninterrupted monitoring even when AC power is unavailable.

Image 6: Illustration of the detector's built-in rechargeable battery, emphasizing its 1000 mAh capacity and ability to provide backup power for 9-10 hours during electrical outages.
5. Vedligeholdelse
- Regelmæssig rengøring: Gently wipe the exterior of the detector with a soft, dry cloth to remove dust. Do not use cleaning agents or solvents.
- Selv test: Perform a self-test regularly (e.g., monthly) by short-pressing the 'O' button to ensure the sensors and alarm functions are working correctly.
- Sensorlevetid: The sensors in this device have an approximate lifespan of 5 years. After this period, consider replacing the unit to ensure continued accuracy and reliability.
- Batteriopladning: Ensure the device remains plugged into an AC outlet to keep the internal battery charged.
6. Fejlfinding
If the detector alarms or displays an error, follow these guidelines:
- Alarm lyder:
- If the CO alarm sounds, immediately move to fresh air and call emergency services. Do not re-enter the area until it has been deemed safe by professionals.
- If the combustible gas alarm sounds, immediately turn off all gas appliances, open windows and doors to ventilate the area, and contact your gas provider or emergency services.
- Error Indication (Red Light/Mute Error): If the device displays a red light or indicates a "mute error" or sensor malfunction, perform a self-test by short-pressing the 'O' button. If the error persists, the device may require service or replacement.
- Ingen skærm/strøm: Ensure the device is securely plugged into a working electrical outlet. If operating on battery, ensure the battery is charged.
7. Specifikationer
| Model | HD08 |
| Detekterbare brændbare gasser | Natural gas, LPG, methane (CH4), ethane (C2H6), propane (C3H8), butane (C4H10), etc. |
| Måleområde for kulilte | 0-999 ppm (± 5%) |
| Temperaturmåleområde | -10 ℃ to 50 ℃ / 14 °F to 122 °F (± 3%) |
| Fugtmåleområde | 5% to 95% RH (± 5%) |
| Sensor Detection Frequency | En gang hvert 2. sekund |
| Strømforsyning | AC 100-240V / 50-60Hz |
| Integreret litiumbatteri | 1000 mAh (3.7 Wh @ 3.7 V) |
| Operation Voltage og Nuværende | 5 V / 1 A |
| Arbejdsmiljø | -10 ℃ to 60 ℃ / 14 °F to 140 °F, 20% to 80% RH |
| Dimensioner (L x B x H) | 8.5 x 5.1 x 3.3 cm |
| Vægt | 60 gram |
| Materiale | ABS plast |
| UPC | 747086495466 |

Image 7: An exploded diagram illustrating the internal structure and high-precision sensors of the Gedsffati HD08-G-B detector, highlighting its advanced technology.
8. Sikkerhedsoplysninger
Please read and understand all safety information before using this product:
- Denne enhed er kun beregnet til husholdningsbrug.
- Do not paint the detector. Paint can clog the sensor openings and prevent the unit from functioning properly.
- Bloker ikke detektorens ventilationsåbninger.
- Test the detector regularly as described in the maintenance section.
- This device is not a substitute for proper installation, use, and maintenance of fuel-burning appliances, including appropriate ventilation and exhaust systems.
- Do not ignore any alarms. Investigate the cause immediately.
- Opbevares utilgængeligt for børn.
9. Garanti og support
For warranty information or technical support, please refer to the documentation included with your purchase or contact Gedsffati customer service. Keep your purchase receipt as proof of purchase.





