1. Product Overview
The Fuers MC18 Door and Window Alarm Sensor is a compact, battery-powered security device designed to alert you to unauthorized openings of doors, windows, cabinets, or gates. It features a loud 100 dB siren and multiple operating modes to suit various security needs. This device is ideal for enhancing security in homes, offices, hotels, apartments, garages, and even RVs.
Image: Components of the Fuers MC18 Door and Window Alarm Sensor.
2. Package Contents
- Door Alarm Sensor Unit (2 pieces)
- Magnetic Contact Unit (2 pieces)
- LR44 Button Batteries (3 per alarm, pre-installed)
- Adhesive Pads for Installation
- Instruction Manual
3. Product Features
- Multi-Scenario Application: Detects the status of doors and windows, preventing unauthorized entry and ensuring safety for children and the elderly. Suitable for homes, offices, hotels, apartments, garages, and RVs.
- High Volume Alarm: Triggers a 100 dB siren when the magnetic sensor and its counterpart are separated by more than 0.39 inches (1 cm).
- Easy Installation: No wiring required. Simply use the provided adhesive pads to install the detector on various surfaces like doors, windows, cabinets, drawers, and gates.
- Battery Powered: Each alarm operates on 3 LR44 button batteries, included for immediate use.
- Compact and Portable: Lightweight and small design (main unit: 2.7 x 1.2 inches; magnet: 1.5 x 0.5 inches) makes it easy to carry for travel or temporary security needs.
Image: Key features of the Fuers MC18 Alarm Sensor.
4. Installation
The Fuers MC18 alarm sensor is designed for quick and easy installation without the need for wiring or screws. Follow these steps for proper setup:
- Prepare the Surface: Ensure the mounting area on your door, window, or other surface is clean and dry.
- Attach Adhesive Pads: Remove the protective film from the adhesive pads and apply them to the back of both the main alarm unit and the magnetic contact unit.
- Position the Units: Mount the main alarm unit on the door/window frame and the magnetic contact unit on the moving part (door/window) itself.
- Align the Units: Crucially, align the arrow on the main alarm unit with the magnetic strip on the contact unit. The distance between the two units must be less than 0.39 inches (1 cm) when the door/window is closed.
- Test Installation: Open and close the door/window to ensure the alarm triggers correctly when separated and stops when closed (depending on the selected mode).
Image: Correct installation method for the sensor, ensuring proper alignment and distance.
Image: Step-by-step visual guide for easy installation.
5. Battery Installation and Replacement
The alarm sensor uses 3 LR44 button batteries. These are typically pre-installed. If the alarm does not function or the sound is weak, battery replacement may be necessary.
- Open Battery Compartment: Gently slide open the battery compartment cover on the main alarm unit.
- Remove Old Batteries: Carefully remove the old LR44 batteries.
- Insert New Batteries: Insert three new LR44 button batteries, ensuring correct polarity (+/-).
- Close Compartment: Replace the battery compartment cover securely.
Image: Inserting LR44 batteries into the alarm sensor.
Video: Product Introduction, including battery installation and mode switching demonstration.
6. Operation Modes
The Fuers MC18 alarm sensor features a mode switch and a power switch. To change modes, ensure the power switch is ON, then use the mode switch (labeled 'SET') on the left side of the console. Each press will cycle through the modes, indicated by beeps.
- Mode 1 (Alarm Mode): When the doors and windows are opened, an immediate, continuous alarm sound will be issued. The alarm will stop when the doors and windows are closed. This mode is suitable for anti-intrusion security.
- Mode 2 (Doorbell Reminder Mode): When the doors and windows are opened, the main engine makes a 'ding-dong' doorbell sound to remind someone to enter or exit. This mode is useful for shops or as a gentle reminder.
- Mode 3 (Door and Window Open Reminder Mode): If doors and windows are left open, the host will issue a 'drop-drop' reminder. The volume is lower than the alarm mode. This mode is useful for reminding you to close doors or windows.
Video: Demonstration of switching between the three operation modes.
7. Alarm Volume
The Fuers MC18 alarm sensor produces a loud 100 dB siren when triggered in Alarm Mode. This volume is designed to be sufficiently loud to alert occupants and deter potential intruders.
Image: Visual representation of the 100 dB alarm activation.
8. Application Scenarios
The versatility of the Fuers MC18 alarm sensor allows for its use in various settings:
- Home Security: Protect entry points like front doors, back doors, and windows from intruders.
- Child and Pet Safety: Place on doors or cabinets to prevent children or pets from accessing restricted areas or sneaking out.
- Pool Safety: Use as a pool door opening detector to prevent unsupervised access to swimming areas.
- Garage and Shed Security: Secure garage doors, shed doors, or other outbuildings.
- Hotel/Travel Security: Portable design makes it ideal for securing hotel room doors or windows while traveling.
- Office Security: Monitor office doors, file cabinets, or sensitive areas.
Image: Multiple application points for the alarm sensor in a home environment.
Image: Alarm sensor used for pool safety.
9. Troubleshooting
- Alarm not working:
Check if the power switch is in the 'ON' position. Verify that the LR44 batteries are correctly installed and not depleted. Replace batteries if necessary. - False alarms:
Ensure the main alarm unit and magnetic contact unit are aligned correctly and the gap between them is less than 0.39 inches (1 cm) when closed. Strong vibrations or wind might cause slight movement; ensure a stable mounting surface. - Weak alarm sound:
This usually indicates low battery power. Replace the LR44 batteries. - Difficulty changing modes:
Ensure the power switch is ON. Press the 'SET' button firmly and briefly to cycle through modes.
10. Specifications
| Model Number | MC1800102 |
| Brand | Fuers |
| Color | White |
| Power Source | Battery Powered (3 x LR44 button batteries) |
| Alarm Volume | 100 dB |
| Magnetic Gap Trigger | Greater than 0.39 inches (1 cm) |
| Main Engine Size | Approx. 2.7 x 1.2 inches (68.6 x 30.5 mm) |
| Magnetic Edge Size | Approx. 1.5 x 0.5 inches (38.1 x 12.7 mm) |
| Operating Temperature | -15°C to 60°C |
| Working Humidity | < 90% |
| Control Method | Tactile (Switch) |
| Sensor Technology | Contact Sensor |
Image: Dimensions of the alarm sensor components.
11. Safety Information
- Keep out of reach of small children to prevent choking hazards from small parts or batteries.
- Do not expose the device to extreme temperatures, direct sunlight, or moisture.
- Ensure batteries are inserted with correct polarity. Dispose of used batteries responsibly according to local regulations.
- This device is an alert system and should not be considered a substitute for comprehensive security measures.
12. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact Fuers customer service through the retailer where the product was purchased. Keep your purchase receipt for warranty claims.
