1. Introduction
The ELRO FS1805M smoke detector is designed to provide timely warning in case of fire, enhancing home safety. This device features a high-quality optical sensor that reacts quickly to smoke, minimizing false alarms. It is equipped with a long-life battery, offering 5 years of continuous protection without replacement, and includes a convenient magnetic mounting system for easy installation.
In the event of a fire, the detector emits a loud alarm of at least 85dB. The ELRO FS1805M complies with the European standard EN14604, ensuring reliable performance and safety.
Key Features:
- 5-Year Battery Life: Provides continuous protection for five years without battery replacement.
- Magnetic Mounting: Enables quick and easy installation without drilling or screws.
- Advanced Optical Sensor: Ensures rapid detection of smoke and reduces false alarms.
- 85dB Alarm: Emits a loud alert to ensure occupants are warned effectively.
- Test Button: Allows for easy monthly testing of the detector's functionality.
- Low Battery Indicator: Notifies you when the battery is nearing the end of its life.
- EN14604 Compliant: Meets strict European safety standards.

This image displays two white ELRO FS1805 smoke detectors, each accompanied by two circular magnetic mounting pads. The detectors are round with a central test button and ventilation grilles.
2. Package Contents
Your ELRO FS1805M smoke detector package includes:
- 2x ELRO FS1805M Smoke Detectors
- 2x Magnetic Mounting Sets
- 2x 5-Year Lithium Batteries (pre-installed or to be activated)
- 1x User Manual
3. Safety Information
Please read all instructions carefully before installation and use. Keep this manual for future reference.
- This smoke detector is designed for residential use.
- Do not paint the smoke detector. Paint can clog the sensing chambers and prevent the unit from operating correctly.
- Do not install in areas with high humidity, extreme temperatures, or excessive dust.
- Regularly test the detector as described in the 'Operation' section.
- Never use cleaning products or solvents to clean the detector.
- In case of an alarm, evacuate the premises immediately and call emergency services.
4. Installation
The ELRO FS1805M smoke detectors come with a magnetic mounting set, making installation straightforward and tool-free.
Installation Steps:
- Prepare the Surface: Ensure the ceiling surface where the detector will be mounted is clean, dry, and smooth.
- Attach Magnetic Discs: The magnetic mounting set consists of two strong magnetic discs with high-quality adhesive strips. Peel the protective film from one magnetic disc and firmly press it onto the back of the smoke detector.
- Mount to Ceiling: Peel the protective film from the second magnetic disc and firmly press it onto your chosen ceiling location.
- Activate Battery: If the battery is not pre-activated, follow the instructions provided with the battery to activate it. The battery is designed to last 5 years after activation.
- Attach Detector: Align the smoke detector (with its attached magnetic disc) with the magnetic disc on the ceiling and allow them to snap together.
- Test Functionality: After installation, press the test button on the detector to ensure it is functioning correctly. A loud alarm sound should be heard.

A diagram showing how to install the smoke detector using the magnetic mount. One magnetic disc adheres to the ceiling, and the other to the detector, allowing for easy attachment without drilling.

This image highlights the 5-year battery life of the smoke detector. It shows a clock icon indicating '5 Yrs' and text explaining that the battery lasts 5 years after activation during installation.
Recommended Placement:
We recommend placing at least one smoke detector on each floor of your home. Always install smoke detectors on the ceiling. The most effective locations are along your escape routes, such as in hallways, landings, and stairwells. Avoid placing detectors near kitchens, bathrooms, or garages where steam, cooking fumes, or exhaust can cause false alarms.

A family is shown enjoying time in a bedroom, with an ELRO smoke detector visibly installed on the ceiling, emphasizing home safety.
5. Operation
Testing the Detector:
To ensure your smoke detector is working correctly, test it monthly by pressing and holding the test button located on the center of the detector. The alarm should sound loudly. If no alarm sounds, refer to the 'Troubleshooting' section.
Low Battery Indication:
The detector is equipped with a 5-year battery. When the battery is nearing the end of its life, the detector will emit a short 'chirp' sound approximately once every 30-60 seconds. This indicates that the battery needs to be replaced. Although the battery is designed for 5 years, it is crucial to replace it immediately upon hearing the low battery warning.
6. Maintenance
Proper maintenance ensures the optimal performance and longevity of your smoke detector.
- Monthly Testing: Test the detector monthly using the test button as described in the 'Operation' section.
- Cleaning: For optimal operation, it is important to keep the smoke detector clean. The easiest way to clean the detector is by gently vacuuming it monthly to remove dust and debris.
- Avoid Cleaning Products: Never use any cleaning products, solvents, or detergents to clean the detector, as these can damage the sensor or internal components.
- Battery Replacement: The battery is designed for 5 years. Replace the battery immediately when the low battery warning 'chirp' is heard.
7. Troubleshooting
If you encounter issues with your ELRO FS1805M smoke detector, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Detector does not alarm during test. | Battery not activated or depleted. Unit faulty. | Ensure battery is correctly activated. If battery is old, replace it. If problem persists, contact support. |
| Detector 'chirps' every 30-60 seconds. | Low battery warning. | Replace the battery immediately. |
| False alarms occur frequently. | Detector placed too close to cooking fumes, steam, or dust. Dust accumulation in sensor. | Relocate the detector away from sources of false alarms. Clean the detector monthly with a vacuum cleaner. |
| Alarm sounds weakly. | Low battery. | Replace the battery. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | FS1805M |
| Sensor Type | Photoelectric |
| Alarm Volume | 85 dB |
| Battery Type | Lithium, 5-year lifespan |
| Power Source | Battery Powered |
| Product Dimensions (Diameter x Height) | 8.9 cm x 3.3 cm |
| Weight (single unit) | 58 grams |
| Material | Plastic |
| Color | White |
| Compliance | EN14604 |
| Manufacturer | ELRO Europe |

A technical drawing of the ELRO FS1805 smoke detector, showing its compact dimensions: a diameter of 89.5mm and a height of 35mm.

An exploded view diagram of the smoke detector, labeling key internal components such as the high-quality 85dB speaker, 5-year battery, test/pause button, intelligent optical sensor, and fire-retardant PC plastic housing.
9. Warranty
ELRO offers a 5-year product warranty on this smoke detector. Additionally, a 10-year manufacturer warranty is provided. Please retain your proof of purchase for warranty claims. The warranty covers defects in materials and workmanship under normal use.
10. Support
For further assistance, technical support, or warranty inquiries, please refer to the contact information provided on the product packaging or visit the official ELRO website. Always provide your model number (FS1805M) when contacting support.





