1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your SEBSON Motion Sensor with Alarm and Chime. Please read this manual thoroughly before using the device to ensure proper function and safety.
The SEBSON Motion Sensor is designed to detect movement of people, large animals, and vehicles within its detection field. It can function as either an alarm or a chime, making it suitable for various applications such as entry alerts or security notifications.
2. Safety Instructions
- Ensure the device is installed in a dry, indoor environment. Avoid exposure to moisture or extreme temperatures.
- Use only 9V alkaline batteries. Do not mix old and new batteries, or different types of batteries.
- Dispose of used batteries according to local regulations.
- Do not attempt to open or modify the device. This may void the warranty and pose a safety risk.
- Keep the device out of reach of children.
3. Package Contents
Verify that all items are present in the package:
- 2 x SEBSON Motion Sensor units
- 4 x Mounting Screws
- 4 x Wall Plugs (Ø6mm)
Note: 9V batteries are not included and must be purchased separately.
4. Product Overview
The SEBSON Motion Sensor consists of the main sensor unit and a rotatable mounting bracket. Key components include the motion detection lens, the speaker grille, and the mode selection switch.

Image: Two SEBSON Motion Sensor units, showing their compact design and white casing.

Image: Detailed view of the motion sensor, highlighting the mode switch with 'CHIME', 'OFF', and 'ALARM' settings.
5. Setup
5.1 Battery Installation
- Gently slide open the battery compartment cover located on the back of the sensor unit.
- Insert two 9V alkaline batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.

Image: Exploded diagram illustrating how to open the battery compartment and insert batteries, along with the separate mounting bracket.
5.2 Mounting the Sensor
- Choose a suitable location for the sensor. The detection range is 8 meters with a 60° angle. Consider areas where movement needs to be monitored.
- Mark the positions for the mounting screws on the wall using the mounting bracket as a template.
- Drill two holes (Ø6mm) at the marked positions.
- Insert the provided wall plugs into the drilled holes.
- Secure the mounting bracket to the wall using the provided screws.
- Slide the motion sensor unit onto the mounted bracket. The sensor housing can be rotated 360° within the bracket to adjust the detection area.

Image: Technical diagram showing the sensor's 8-meter detection range, 60-degree detection angle, and the 360-degree rotation feature of the sensor unit within its bracket.
6. Operating Instructions
The SEBSON Motion Sensor features a three-position switch to select its operating mode:
- CHIME Mode: When movement is detected, the sensor will emit a short, pleasant chime sound. This mode is ideal for entry alerts in shops or offices.
- OFF Mode: The sensor is powered off and will not detect movement or emit any sound.
- ALARM Mode: When movement is detected, the sensor will emit a loud alarm sound. This mode is suitable for security purposes.
To select a mode, slide the switch on the side of the sensor to the desired position (CHIME, OFF, or ALARM).

Image: Detailed view of the sensor's side, clearly showing the three-position switch for selecting between Chime, Off, and Alarm modes.
7. Maintenance
- Cleaning: Wipe the sensor's exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Battery Replacement: If the sound becomes weak or the sensor stops responding, replace the 9V batteries. Follow the battery installation steps in Section 5.1.
- Lens Care: Keep the motion detection lens clean and free from obstructions to ensure optimal performance.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Sensor not detecting movement. |
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| Sound is too low or distorted. |
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| False alarms. |
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9. Specifications
| Feature | Detail |
|---|---|
| Brand | SEBSON |
| Model Number | 2_X_BWM_ALARM_B |
| Power Source | Battery Powered (2x 9V batteries, not included) |
| Battery Type Recommended | Alkaline |
| Detection Range | Up to 8 meters |
| Detection Angle | 60 degrees |
| Rotation Capability | 360 degrees (within bracket) |
| Mounting Type | Wall Mount |
| Color | White |
| Dimensions (Package) | 12 x 9 x 8 cm |
| Weight (Item) | 280 g |
10. Warranty and Support
SEBSON products are designed and manufactured to high-quality standards. This product comes with a standard manufacturer's warranty. For specific warranty details, technical support, or assistance with your device, please contact SEBSON customer service through their official website or the retailer where the product was purchased.
Please retain your proof of purchase for warranty claims.





