Gedsffati HD11

Gedsffati 5-in-1 Detector Instruction Manual

Model: HD11

1. Introduction

Thank you for choosing the Gedsffati 5-in-1 Carbon Monoxide, Smoke, and Combustible Natural Gas Alarm. This advanced detector is designed to provide comprehensive safety monitoring for your home or RV, integrating sensors for carbon monoxide (CO), smoke, combustible gases (such as natural gas, propane, and methane), temperature, and humidity. Its plug-and-play design and built-in backup battery ensure continuous protection. Please read this manual thoroughly before installation and use to ensure proper operation and maximize the lifespan of your device.

Gedsffati 5-in-1 Detector front and back view

Figure 1.1: Front and back view of the Gedsffati 5-in-1 Detector, showing the display and plug.

2. Safety Information

WARNING: This device is designed to detect carbon monoxide, smoke, and combustible gases. It is not a substitute for proper maintenance of fuel-burning appliances, including ventilation systems, nor is it a substitute for property insurance.

2.1 General Safety Precautions

  • Do not paint the detector. Paint can clog the sensing vents and interfere with the unit's ability to detect hazards.
  • Do not block the vents on the detector. Ensure proper airflow around the unit.
  • Keep the detector away from direct sunlight, high humidity, and extreme temperatures.
  • This device should be regularly tested as described in the Maintenance section.

2.2 Carbon Monoxide Hazard

Carbon monoxide is a colorless, odorless, and toxic gas. Mild poisoning symptoms include headaches, dizziness, nausea, and fatigue. Higher concentrations can lead to confusion, collapse, and even death. The detector provides real-time CO concentration readings in parts per million (ppm).

2.3 Combustible Gas Hazard

Combustible gases like natural gas, propane, and methane are colorless and odorless in their pure state (odorants are added for detection). Methane itself is non-toxic but can cause suffocation by displacing oxygen. Leaks can lead to explosive hazards. The detector will alert you to the presence of these gases.

2.4 Smoke Hazard

Thick smoke contains harmful particles and gases (e.g., carbon monoxide, sulfur dioxide, nitrogen oxides) that can irritate respiratory passages, cause coughing, chest tightness, and shortness of breath. Inhaling too much smoke can lead to severe health issues and damage to the nervous and cardiovascular systems.

Diagram illustrating carbon monoxide, combustible gas, and smoke hazards

Figure 2.1: Overview of the hazards detected by the unit.

3. Product Features

  • 5-in-1 Detection: Integrated sensors for Carbon Monoxide (CO), Smoke, Combustible Gas (natural gas, propane, methane, etc.), Temperature, and Humidity.
  • Plug-in & Play Design: Compatible with 110V to 220V AC outlets, simply plug in for immediate operation.
  • Built-in 2000 mAh Emergency Backup Battery: Provides 18-20 hours of working time during power outages, rechargeable to save on battery replacement costs.
  • 2.1'' HD Screen: Displays real-time data dynamically, including CO ppm, Smoke indicating bar, Combustible gas warning icon, humidity, temperature, and alarm status.
  • High Precision Sensors: Equipped with sensitive and stable electrochemical and photoelectric sensors for accurate detection.
  • Audible and Visual Alarms: Features an 85 dB audible alarm and visual indicators for immediate alerts.
  • UL Standard Compliance: Built-in UL217, UL2034, UL1484 standard independent Smoke / CO / Combustible gas sensors.
Diagram showing 5-in-1 features: Gas, Smoke, CO, Humidity, Temp, Battery, Plug switch, LanyardDiagram showing built-in 2000mAh backup battery features

Figure 3.1: Key features and backup battery details.

4. Setup

4.1 Choosing a Location

Proper placement of the detector is crucial for effective monitoring. Consider the following guidelines:

  • Carbon Monoxide (CO): CO is slightly lighter than air and mixes readily with it. Place detectors near sleeping areas and on every level of your home.
  • Smoke: Smoke rises. For optimal smoke detection, place the unit on a wall or ceiling where smoke can easily reach it.
  • Combustible Gas: Natural gas (methane) is lighter than air and rises. Propane and butane are heavier than air and sink. If detecting natural gas, place the unit higher on the wall. If detecting propane/butane, place it lower. For general combustible gas detection, a mid-level placement is often recommended.
  • Avoid: Areas near windows, doors, or vents where drafts might interfere with readings. Also avoid extremely dusty, dirty, or greasy areas.
Diagram showing recommended placement of smoke, CO, and combustible gas detectors in a multi-story home layout.

Figure 4.1: Home Harmful Gas Detecting Placement Guide.

4.2 Initial Power-Up

  1. Unpack the detector and ensure all components are present (detector, manual).
  2. Plug the detector directly into a standard 110V-220V AC electrical outlet.
  3. The device will power on automatically and begin its self-test sequence. The HD screen will illuminate and display initial readings.

4.3 Battery Charging

The built-in 2000 mAh lithium-ion battery will automatically charge when the unit is plugged into an AC outlet. A battery icon on the HD screen indicates the charging status and current battery level. Ensure the unit is fully charged before relying solely on battery backup for extended periods.

5. Operation

5.1 Screen Display and Indicators

The 2.1'' HD screen provides real-time information:

  • CO ppm: Displays the concentration of carbon monoxide.
  • GAS icon: Indicates the presence of combustible gas.
  • SMOKE icon: Indicates the presence of smoke.
  • Temperature: Shows the ambient temperature.
  • Humidity: Displays the relative humidity.
  • Battery Icon: Shows battery charge level.
  • Plug Icon: Indicates if the unit is connected to AC power.
  • Alarm Status: Visual indicators and audible alerts when thresholds are exceeded.
Diagram showing the detector's screen layout and button functions.

Figure 5.1: HD Screen Display and Button Functions.

5.2 Button Functions

  • Power Button (): Short press for self-testing. Long press to turn off when operating on battery power.
  • Screen Brightness Button (💡): Short press to change screen brightness level. Long press to switch temperature display between Celsius (°C) and Fahrenheit (°F).
  • Buzzer Button (🔊): Short press to turn off the buzzer during an alarm.

5.3 Testing the Unit

It is recommended to test the detector weekly to ensure proper functionality.

  1. Self-Test: Short press the Power button (). The unit will perform a self-diagnostic test, and the alarm should sound briefly.
  2. Smoke Test: Carefully approach the detector with smoke from a smoldering cigarette or a smoke test spray. The smoke icon should activate, and the alarm should sound.
  3. Combustible Gas Test: Briefly expose the detector to a small amount of combustible gas (e.g., from an unlit gas stove burner for a second, then immediately turn off the gas). The gas icon should activate, and the alarm should sound.

Note: Carbon monoxide is colorless and odorless. Do not attempt to test the CO sensor with car exhaust or burning gas, as this is extremely dangerous and can cause harm. The self-test function verifies the CO sensor's operation.

Image showing how to test the detector with smoke from a cigarette.

Figure 5.2: Testing the detector with smoke.

5.4 Alarm Indications

When a hazardous level of CO, smoke, or combustible gas is detected, the unit will activate its alarm:

  • Audible Alarm: A loud 85 dB siren will sound.
  • Visual Alarm: The corresponding icon (CO, GAS, or SMOKE) on the HD screen will flash, and the CO ppm reading will increase if CO is detected.

If the alarm sounds, evacuate the area immediately and call emergency services. Do not re-enter until the area has been cleared by professionals.

Video 5.1: Product Overview demonstrating the detector's features and alarm function. This video provides a visual and auditory demonstration of the device in action, including its display and alarm sounds.

Video 5.2: Demonstration of the 5-in-1 CO, Smoke, and Natural Gas Detector Combination. This video highlights the combined detection capabilities and how the device responds to different hazards.

Video 5.3: Overview of the 5-in-1 Plug-in CO, Smoke, and Natural Gas Detectors. This video showcases the plug-in functionality and the various detection modes of the device.

6. Maintenance

6.1 Cleaning Your Detector

Dust and debris can accumulate on the detector and affect its performance. Follow these steps to clean your unit:

  • Unplug the detector from the power outlet.
  • Gently wipe the exterior of the unit with a soft, damp cloth. Do not use cleaning solvents or harsh chemicals.
  • Use a soft brush or a vacuum cleaner with a soft brush attachment to carefully clean around the sensing vents.
  • Ensure the unit is completely dry before plugging it back in.

6.2 Regular Testing

As mentioned in the Operation section, test your detector weekly using the self-test button. Additionally, perform a smoke and gas test monthly to ensure the sensors are functioning correctly.

6.3 Battery Care

The built-in rechargeable lithium-ion battery is designed for long-term use. To maintain battery health, avoid prolonged periods of complete discharge. If the unit is stored for an extended time, ensure it is fully charged periodically.

7. Troubleshooting

ProblemPossible CauseSolution
Detector does not power on.No AC power; completely discharged battery.Check power outlet; plug in and allow battery to charge.
False alarm.Cooking fumes, steam, aerosols, dust, strong odors.Ventilate the area; relocate the detector away from sources of false alarms.
Alarm sounds during normal operation.Hazardous levels of CO, smoke, or gas detected.Evacuate immediately and call emergency services.
Screen display is dim or off.Brightness setting; power saving mode.Short press the brightness button to adjust.
Temperature display is incorrect.Incorrect temperature unit setting.Long press the brightness button to switch between °C and °F.

If problems persist after attempting these solutions, please contact customer support.

8. Specifications

  • Brand: Gedsffati
  • Model Number: HD11
  • Power Source: AC (110V-220V)
  • Backup Battery: 2000 mAh Lithium Ion (included)
  • Item Weight: 6.4 ounces (approx. 0.4 Pounds)
  • Product Dimensions: 2.7 x 1.1 x 4.6 inches
  • Wattage: 5 watts
  • Alarm Loudness: 85 dB
  • Sensors: Electrochemical (CO), Photoelectric (Smoke), Catalytic Combustion (Combustible Gas)
  • Usage: Indoor
  • UPC: 758321297929
  • Manufacturer: Shenzhen Huidu Technology Co., Ltd.
  • Country of Origin: China

9. Warranty and Support

9.1 Warranty Information

This Gedsffati detector comes with a 5-Year Free Exchange Warranty for any quality issues. Please retain your proof of purchase for warranty claims.

9.2 Customer Support

For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Gedsffati customer support through the retailer's platform or visit the official Gedsffati website for contact details.

© 2025 Gedsffati. All rights reserved.

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