1. はじめに
This manual provides detailed instructions for the installation, operation, and maintenance of your Chtoocy CH-921 Solar Wireless Driveway Alarm Motion Sensor. Please read this guide thoroughly before use to ensure optimal performance and safety.

Image 1: Chtoocy Solar Wireless Motion Sensor with Waterproof Design. This image shows the sensor unit mounted on a wall next to a driveway, highlighting its solar panel, rechargeable battery, and operating temperature range.
2.製品コンポーネント
The Chtoocy CH-921 Solar Wireless Driveway Alarm system typically includes the following components:
- Solar-powered Motion Sensor(s)
- Receiver Unit (if purchased as a kit)
- 取り付け金具(ネジ、アンカー)
- 充電ケーブル
- ユーザーマニュアル(このドキュメント)
- クイックスタートガイド
3. セットアップとインストール
3.1 初期充電
Before initial use, ensure the receiver unit is fully charged. The sensor unit comes with approximately 20% power from the factory and should also be charged before installation.
Video 1: Getting Started with the 921 Wireless Driveway Alarm. This video demonstrates the initial charging process for both the sensor and receiver units.
3.2センサーオーバーview and Sensitivity Settings
The sensor features a power switch, charging port, LED indicator switch, and a sensitivity adjustment switch. There are three sensitivity levels (High, Medium, Low) to minimize false alarms from small animals or environmental factors.
Video 2: 921 Driveway Alarm Sensor Overview. This video details the features of the sensor, including sensitivity settings and the LED indicator switch.

Image 2: Three Sensitivity Levels. This image illustrates the different detection ranges (0-33ft for High, 0-25ft for Medium, 0-15ft for Low) and how they relate to vehicle detection.
3.3レシーバーオーバーview
The receiver unit can be powered via AC power or 4 AA batteries. It features a power button, volume settings, tone selection, and pairing functions.
Video 3: 921 Driveway Alarm Receiver Overview. This video provides a detailed look at the receiver's functions, including power options, volume, and tone settings.

Image 3: Two Ways Alarm for Receiver Work. This image shows the receiver being powered by a DC5V adapter and also indicates its ability to run on 4 AAA batteries.
3.4センサーの設置
The sensor is designed for easy screw mounting. Use the provided screwdriver to secure the base plate, then attach the sensor and adjust its angle for optimal detection. The sensor can be rotated to remove it from the base for charging without dismounting the base.

Image 4: Easy to Mounting & Disassemble. This image demonstrates the three steps for screw mounting the sensor and its adjustable angle.

Image 5: Do It All Yourself - Super Easy To Install And Customize. This image shows the receiver mounted on a wall and the three steps for screw mounting the sensor.
4. 操作手順
4.1 Pairing Sensors and Setting Tones
The system allows for customizable alarm tones for each sensor, enabling you to identify which zone has been triggered. To pair a sensor and assign a unique tone:
- Clear History: Press and hold the Power button and Paired button on the receiver simultaneously until the screen flashes.
- チャンネルを選択: Long press the Paired button to select the desired channel (1-4) for the sensor.
- Select Tone: Press the Tones button to cycle through the 12 available alarm tones.
- Trigger Sensor: Wave your hand in front of the sensor to send a signal. The receiver will ring with the selected tone, and the corresponding channel number will flash for one minute, indicating successful pairing.
Video 4: How to Set Different Music for Each Sensor. This video guides you through the process of pairing sensors and assigning distinct tones.

Image 6: Make Each Sensor Have Different Sound. This image shows the receiver and two sensors, illustrating how different sounds can be assigned to sensors placed in various locations like a gate, driveway, garage, or for home surveillance.

Image 7: Easy to Select Special Music for Each Sensor. This image provides a step-by-step visual guide on how to clear history, select a channel, choose music, and wave your hand in front of the detector to pair.
4.2 システムの拡張
The Chtoocy driveway alarm system is expandable, allowing you to add up to 4 additional sensors and receivers to cover larger areas.
Video 5: How to Pair and Expand The System. This video demonstrates the steps to add extra sensors and receivers to your existing system.

Image 8: Full Expandable Monitoring System. This image shows multiple sensors and receivers covering different areas of a property, indicating the system's expandability.

Image 9: Keep Your Safety In Your Hand - Full Expandable Monitoring System. This image reinforces the concept of an expandable system for comprehensive property monitoring.
5. メンテナンス
The solar panel on the sensor helps maintain the battery charge. On a full charge, the sensor's rechargeable battery can last up to 24 months. Regularly check the sensor's solar panel for dirt or debris and clean it gently to ensure efficient charging. The sensor has an accurate waterproof rating, designed to withstand tough outdoor conditions.

Image 10: Waterproof and Adjustable Angle. This image highlights the sensor's waterproof feature and its adjustable mounting angle.
6。 トラブルシューティング
If you encounter any product installation or test abnormalities, please refer to the included detailed manual and Quick Start Guide for troubleshooting steps. Common issues may include:
- 検出なし: Check sensor placement, ensure it's within range (up to 1/2 mile in ideal conditions), and verify sensitivity settings.
- 誤報: Adjust sensor sensitivity to a lower setting (Medium or Low) to avoid triggers from small animals or environmental factors like leaves.
- 受信機への信号なし: Ensure both sensor and receiver are powered on and properly paired. Clear pairing history and re-pair if necessary. Check for obstructions that might interfere with the wireless signal.
- バッテリー残量低下: Recharge the sensor and/or replace receiver batteries. The solar panel should keep the sensor charged under sufficient sunlight.
問題が解決しない場合は、カスタマー サポートにお問い合わせください。
7. 仕様
| ブランド | Chtoocy |
| モデル番号 | CH-921 Sensor |
| 色 | 緑 |
| 電源 | バッテリー駆動(ソーラー充電) |
| 最大検出範囲 | 30 Feet (Sensor) |
| 無線伝送範囲 | 1/2 Mile (3000 ft) |
| 取り付けタイプ | 壁掛け |
| 電池のタイプ | リチウムイオン(付属) |
| バッテリー寿命(センサー) | Up to 24 months on full charge |
| アイテム重量 | 7.4オンス |
| 製品寸法 | 4.13 x 2.95 x 3.94インチ |
| 欧州連合 | 786411741786 |
8. 保証とサポート
Chtoocy provides a 2-year quality warranty and lifetime service for this outdoor motion sensor. If you have any questions or concerns about your purchase, please feel free to contact us. Our customer support is available 24 hours online to assist you.




