1.製品オーバーview
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. パッケージ内容
- Door Alarm Sensor Unit (2 pieces)
- Magnetic Contact Unit (2 pieces)
- LR44 Button Batteries (3 per alarm, pre-installed)
- Adhesive Pads for Installation
- 取扱説明書
3 製品の特徴
- マルチシナリオアプリケーション: 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.
- 大音量アラーム: Triggers a 100 dB siren when the magnetic sensor and its counterpart are separated by more than 0.39 inches (1 cm).
- 簡単なインストール: No wiring required. Simply use the provided adhesive pads to install the detector on various surfaces like doors, windows, cabinets, drawers, and gates.
- 電池駆動: Each alarm operates on 3 LR44 button batteries, included for immediate use.
- コンパクトで持ち運びに便利: 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. インストール
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:
- 表面を準備する: Ensure the mounting area on your door, window, or other surface is clean and dry.
- 粘着パッドを取り付ける: 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.
- ユニットを配置します。 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.
- テストインストール: 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.バッテリーの取り付けと交換
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.
- バッテリーコンパートメントを開く: Gently slide open the battery compartment cover on the main alarm unit.
- 古い電池を取り外す: Carefully remove the old LR44 batteries.
- 新しい電池を挿入します: Insert three new LR44 button batteries, ensuring correct polarity (+/-).
- コンパートメントを閉じる: 電池収納部のカバーをしっかりと取り付けてください。

Image: Inserting LR44 batteries into the alarm sensor.
Video: Product Introduction, including battery installation and mode switching demonstration.
6. 動作モード
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. アラーム音量
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. 応用シナリオ
The versatility of the Fuers MC18 alarm sensor allows for its use in various settings:
- ホームセキュリティ: Protect entry points like front doors, back doors, and windows from intruders.
- 子供とペットの安全: Place on doors or cabinets to prevent children or pets from accessing restricted areas or sneaking out.
- プールの安全性: 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.
- オフィスセキュリティ: 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。 トラブルシューティング
- 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. - 誤報:
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. - 弱いアラーム音:
This usually indicates low battery power. Replace the LR44 batteries. - モードの変更が困難:
Ensure the power switch is ON. Press the 'SET' button firmly and briefly to cycle through modes.
10. 仕様
| モデル番号 | MC1800102 |
| ブランド | 燃料 |
| 色 | 白 |
| 電源 | Battery Powered (3 x LR44 button batteries) |
| アラーム音量 | 100デシベル |
| Magnetic Gap Trigger | Greater than 0.39 inches (1 cm) |
| Main Engine Size | 約68.6 x 30.5 mm(2.7 x 1.2インチ) |
| Magnetic Edge Size | 約38.1 x 12.7 mm(1.5 x 0.5インチ) |
| 動作温度 | -15°C ~ 60°C |
| 動作湿度 | < 90% |
| 制御方法 | Tactile (Switch) |
| センサー技術 | 接触センサー |

Image: Dimensions of the alarm sensor components.
11. 安全情報
- 小さな部品や電池による窒息の危険を防ぐため、小さなお子様の手の届かないところに保管してください。
- デバイスを極端な温度、直射日光、湿気にさらさないでください。
- 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. 保証とサポート
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.