1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Jemay Carbon Monoxide (CO) Detector, Model GS811-A. Please read this manual thoroughly before using the device to ensure safe and effective operation. Keep this manual for future reference.
Carbon monoxide is a colorless, odorless, and tasteless gas that can be fatal. This detector is designed to monitor CO levels and alert you to potentially dangerous concentrations, helping to protect you and your family.
Image 1.1: Front view of the Jemay Carbon Monoxide Detector, showing the digital display, TEST/SILENCE button, and LED indicators.
2. Important Safety Information
WARNING: This carbon monoxide alarm is designed to detect carbon monoxide gas from any combustion source. It is NOT designed to detect smoke or fire. This device is not a substitute for a smoke alarm.
- Never ignore any alarm. Investigating the source of the alarm is crucial.
- Do not paint over the detector. Paint can clog the sensor openings and interfere with the unit's ability to detect CO.
- Do not block the ventilation openings of the detector.
- Test the alarm weekly to ensure proper operation.
- If the alarm sounds, immediately move to fresh air and call emergency services.
Image 2.1: Illustration depicting carbon monoxide (CO) and common sources such as faulty heating appliances.
3. Product Features
- Real-time CO Monitoring: Digital display shows exact CO concentration in parts per million (PPM).
- 10-Year Lifespan: Both the device and its built-in battery are designed for a decade of continuous operation.
- Flexible Installation: Suitable for wall mounting, ceiling mounting, or free-standing placement on a desktop.
- Mute Function: Temporarily silence nuisance alarms for 10 minutes. Low battery or fault alerts can be muted for up to 10 hours.
- Alarm Memory: Short-press the TEST/SILENCE button in standby mode to view the peak CO concentration from the last alarm event for 4 seconds.
- LED Indicators: Three-colored LED (Green, Yellow, Red) provides clear visual status updates.
- Audible Alarm: Emits an 85dB alarm sound during CO detection.
- Self-Diagnostic: Displays "Err" for faults and "End" for end-of-life status.
Image 3.1: Overview of key features including the 10-year lifespan, built-in battery, LCD, and LED indicators.
4. Package Contents
Upon opening the package, please verify that all items are present and undamaged:
- Jemay Carbon Monoxide Detector (Model GS811-A)
- 3M Tape for mounting
- Bubble bag (packaging material)
- Instruction Manual (this document)
- Screw pack for mounting
5. Installation and Setup
5.1 Choosing a Location
For optimal performance, consider the following guidelines when selecting a location for your CO detector:
- Install at least one CO detector on each level of your home, especially near sleeping areas.
- CO is slightly lighter than air. For wall mounting, place the detector approximately 5 feet (1.5 meters) above the floor.
- Avoid placing the detector in direct sunlight, near heating/cooling vents, or in areas with high humidity (e.g., bathrooms).
- Keep the detector away from areas where it might be obstructed by furniture or curtains.
5.2 Mounting Options
The Jemay CO Detector offers multiple installation methods:
Image 5.1: Depiction of free placement and wall mounting options.
Image 5.2: Close-up of the detector's backplate for wall mounting.
Image 5.3: The detector equipped with 3M tape for convenient installation.
Image 5.4: The detector used in a free-standing configuration on a surface.
- Wall Mounting (Screws):
- Mark the desired screw positions on the wall.
- Drill holes and insert wall anchors if necessary.
- Secure the mounting bracket (if separate) or the detector directly using the provided screws.
- Wall Mounting (3M Tape):
- Ensure the wall surface is clean, dry, and smooth.
- Peel the protective backing from the 3M tape.
- Press the detector firmly onto the desired location for at least 30 seconds.
- Free-Standing: Simply place the detector on a flat, stable surface at the recommended height.
6. Operation
6.1 Initial Power-On
The detector is powered by a built-in 10-year battery. Upon initial activation (which typically occurs when the battery tab is removed or the unit is first mounted), the device will perform a self-test. The digital display will show a countdown or a series of dashes, and the LEDs will cycle through colors. Once complete, the green LED will flash, and the display will show "0 PPM" or the current CO concentration.
6.2 Digital Display and Indicators
The detector features a clear LCD display and three LED indicators:
- LCD Display: Shows real-time CO concentration in PPM. In alarm mode, readings refresh every 40 seconds.
- Green LED (POWER): Flashes periodically to indicate normal operation.
- Yellow LED (FAULT): Indicates a fault or low battery condition.
- Red LED (ALARM): Flashes brightly during a CO alarm event.
Image 6.1: Detailed view of the LCD display showing various statuses like CO concentration, battery level, fault ("Err"), and end-of-life ("End").
Image 6.2: Visual representation of the three-colored LED indicators and their meanings.
6.3 TEST/SILENCE Button
The TEST/SILENCE button serves two primary functions:
- Testing: Press and hold the button for a few seconds to initiate a self-test. The alarm will sound, and the LEDs will flash, confirming the unit is functioning correctly. Perform this test weekly.
- Silencing Alarms:
- CO Alarm: Short-press the button to temporarily silence a CO alarm for 10 minutes. The detector will continue to monitor CO levels during this period.
- Low Battery/Fault Alarm: Short-press the button to silence low battery or fault alerts for up to 10 hours.
- Alarm Memory: In standby mode, short-press the button to display the peak CO concentration recorded during the last alarm event for 4 seconds.
7. Alarm Conditions and Response
The detector is programmed to alarm at specific CO concentrations and durations:
| CO Concentration (PPM) | Alarm Time |
|---|---|
| 30 PPM | No alarm before 120 minutes |
| 50 PPM | Alarm between 60 to 90 minutes |
| 100 PPM | Alarm between 10 to 40 minutes |
| 300 PPM | Alarm within 3 minutes |
Image 7.1: Visual representation of the alarm thresholds and corresponding response times.
7.1 What to do if the Alarm Sounds
- Immediately move to fresh air outdoors or open all doors and windows to ventilate the area.
- Call your emergency services (Fire Department or 911).
- Do not re-enter the premises until the CO has dissipated and the cause of the CO has been identified and corrected.
- Seek medical attention for anyone experiencing symptoms of CO poisoning (headache, nausea, dizziness).
8. Maintenance
- Weekly Testing: Press the TEST/SILENCE button weekly to ensure the alarm is functioning.
- Cleaning: Gently vacuum or wipe the exterior of the detector with a soft, damp cloth at least once a month. Do not use cleaning solvents or sprays.
- Battery: The detector features a built-in 10-year battery that does not require replacement.
- End-of-Life: The detector has a 10-year lifespan. When it reaches its end-of-life, the display will show "End" and the unit will chirp. Replace the unit immediately.
Image 8.1: Illustration highlighting the 10-year sealed battery and sensor life.
9. Troubleshooting
| Problem | Indicator / Display | Solution |
|---|---|---|
| CO Alarm sounds | Red LED flashes, audible alarm, CO concentration displayed | Follow "What to do if the Alarm Sounds" instructions (Section 7.1). Ventilate the area and seek professional help to identify the CO source. |
| Fault indication | Yellow LED flashes, "Err" on display, chirping sound | The unit has detected an internal fault. Press TEST/SILENCE to mute for 10 hours. If the fault persists, the unit needs to be replaced. |
| End-of-Life indication | "End" on display, chirping sound | The detector has reached its 10-year operational limit. Replace the unit immediately. |
| Low Battery indication | Low battery icon on display, Yellow LED flashes, chirping sound | The built-in battery is nearing depletion. Press TEST/SILENCE to mute for 10 hours. The unit needs to be replaced soon as the battery is not user-replaceable. |
| No display / Unit unresponsive | No lights, no sound, blank display | Ensure the unit is properly activated. If it remains unresponsive, the unit may be defective or at end-of-life. Replace the unit. |
10. Specifications
| Feature | Detail |
|---|---|
| Model Number | GS811-A |
| Sensor Type | Electrochemical |
| Power Source | Built-in 3.0V AA alkaline batteries (non-replaceable) |
| Product Lifespan | 10 Years |
| Alarm Loudness | ≥ 85dB at 1 meter |
| CO Detection Range | 20 to 999 PPM |
| Operating Humidity | 25-95% RH (non-condensing) |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Dimensions (D x W x H) | 1.34" x 4.72" x 2.87" (34.2mm x 120mm x 73mm) |
| Weight | 6.4 ounces |
| Material | ABS |
Image 10.1: Internal components of the detector, including the electrochemical sensor and intelligent chipset.
Image 10.2: Detailed dimensions of the CO detector.
11. Warranty and Support
Jemay products are designed for reliability and performance. For specific warranty information or technical support, please refer to the contact details provided with your purchase documentation or visit the official Jemay website. Keep your purchase receipt as proof of purchase.
For general inquiries or assistance, you may contact Jemay customer service through their Amazon store page: Jemay Store on Amazon.