1. Introduction
This manual provides essential information for the proper use and maintenance of your ELECOM Bluetooth 3-Button S-Size Mouse, model M-BY10BRBK. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.
The M-BY10BRBK is a compact IR LED mouse compliant with Bluetooth 5.0. It features a low power consumption infrared LED, allowing for approximately 10 months of use without battery replacement. The mouse offers a 1300 count resolution for smooth operation and a symmetrical design suitable for both right-handed and left-handed users.
2. Safety Information
- Do not expose the mouse to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping the mouse or subjecting it to strong impacts.
- Keep the mouse away from water and other liquids.
- Do not attempt to disassemble or modify the mouse. This may void the warranty and cause damage.
- Dispose of batteries according to local regulations. Do not mix old and new batteries or different types of batteries.
- The infrared LED emits invisible light. Avoid direct eye exposure.
3. Package Contents
Please ensure all items are present in the package:
- ELECOM Bluetooth 3-Button S-Size Mouse (M-BY10BRBK)
- AAA Alkaline Battery (for trial use)
- User Manual (this document)
4. Product Overview
Familiarize yourself with the components of your ELECOM Bluetooth mouse.

Figure 4.1: Top view of the ELECOM Bluetooth 3-Button S-Size Mouse M-BY10BRBK, showing the left button, right button, and scroll wheel.

Figure 4.2: Bottom view of the mouse, highlighting the ON/OFF switch and the pairing button. This image also illustrates the power-saving design, indicating approximately 10 months of battery life with one AAA battery.
Key Components:
- Left Button: Primary click function.
- Right Button: Secondary click function (context menu).
- Scroll Wheel: For vertical scrolling and middle-click function.
- Power Switch: Located on the bottom of the mouse to turn it ON or OFF, conserving battery when not in use.
- Pairing Button: Used to initiate Bluetooth pairing mode.
- Battery Compartment: Holds one AAA battery.
- Battery Level Indicator Lamp: Notifies when battery replacement is needed.
5. Setup Instructions
5.1. Battery Installation
- Open the battery compartment cover on the bottom of the mouse.
- Insert one AAA alkaline battery, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
5.2. Bluetooth Pairing
The ELECOM M-BY10BRBK mouse connects wirelessly via Bluetooth 5.0. No receiver is required for Bluetooth HOGP compatible devices.

Figure 5.1: Visual guide for Bluetooth pairing. This image shows the process on a PC, but the general steps apply to other compatible devices.
- Turn on the mouse using the power switch on the bottom.
- On your computer, tablet, or smartphone, open the Bluetooth settings.
- Initiate a device search within your Bluetooth settings.
- Press and hold the pairing button on the bottom of the mouse for approximately 3 seconds until the LED indicator starts blinking, indicating it is in pairing mode.
- From the list of available devices on your screen, select "ELECOM IR Mouse".
- Once connected, the LED indicator on the mouse will stop blinking or turn off, and your device will confirm the successful pairing.
Compatibility: This mouse is compatible with Windows 11, Windows 10, Windows 8.1, Android 7-10, macOS Catalina (10.15), iOS/iPadOS 13.4. Ensure your operating system is updated to the latest version for optimal compatibility.

Figure 5.2: The mouse is compatible with various devices including Mac OS, iOS, iPadOS, and Android, making it suitable for devices without traditional USB ports.
6. Operating Instructions
After successful pairing, your ELECOM Bluetooth mouse is ready for use.
6.1. Basic Functions
- Moving the Cursor: Move the mouse across a flat surface to control the cursor on your screen.
- Left Click: Press the left button to select items, open links, or activate functions.
- Right Click: Press the right button to open context menus or access secondary functions.
- Scroll: Roll the scroll wheel up or down to navigate through documents or web pages.
- Middle Click: Press the scroll wheel down to activate middle-click functions (e.g., opening links in new tabs).
6.2. Symmetrical Design
The mouse features a symmetrical design, ensuring comfortable use for both right-handed and left-handed individuals.

Figure 6.1: The symmetrical design ensures ease of use for both right-handed and left-handed users.
7. Maintenance
7.1. Cleaning
- Ensure the mouse is turned off before cleaning.
- Use a soft, dry cloth to wipe the surface of the mouse.
- For stubborn dirt, slightly dampen the cloth with water or a mild cleaning solution, then wipe dry immediately.
- Do not use abrasive cleaners, solvents, or aerosol sprays.
7.2. Battery Replacement
When the battery level indicator lamp signals low battery, replace the AAA battery as described in Section 5.1. The mouse is designed for approximately 10 months of use on a single AAA battery.
8. Troubleshooting
If you encounter issues with your mouse, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Mouse does not respond. | Power is off, battery is dead, or not paired. | Ensure the power switch is ON. Replace the battery. Re-pair the mouse with your device (see Section 5.2). |
| Cursor movement is erratic or slow. | Dirty sensor, unsuitable surface, or low battery. | Clean the optical sensor. Use the mouse on a clean, non-reflective surface. Replace the battery. |
| Cannot pair the mouse. | Bluetooth on device is off, mouse is not in pairing mode, or device is not compatible. | Ensure Bluetooth is enabled on your device. Make sure the mouse is in pairing mode (blinking LED). Check device compatibility (see Section 5.2). Try restarting both the mouse and your device. |
| Connection drops frequently. | Interference, distance, or low battery. | Move closer to your device. Avoid using near other wireless devices that may cause interference. Replace the battery. |
9. Specifications
Detailed technical specifications for the ELECOM Bluetooth 3-Button S-Size Mouse M-BY10BRBK.
| Feature | Specification |
|---|---|
| Model Number | M-BY10BRBK |
| Connectivity | Bluetooth 5.0 Class2 / Profile: HOGP (HID Over GATT Profile) |
| Compatible OS | Windows 11, Windows 10, Windows 8.1, Android 7-10, macOS Catalina (10.15), iOS/iPadOS 13.4 (Latest OS versions and service packs may be required) |
| Resolution | 1300 counts |
| Communication Method | GFSK method |
| Radio Frequency | 2.4GHz band |
| Radio Wave Reach | Non-magnetic surfaces (e.g., wooden desk): approx. 10m; Magnetic surfaces (e.g., steel desk): approx. 3m (ELECOM test values, not guaranteed) |
| Reading Method | Optical sensor method (IR LED) |
| Number of Buttons | 3 buttons (including scroll wheel button) |
| Number of Wheels | 1 wheel |
| Continuous Operation Time | Approx. 153 hours |
| Continuous Standby Time | Approx. 500 days |
| Estimated Battery Usage Period | Approx. 309 days (When operating the mouse for 5% of 8 hours of PC operation per day) |
| Power Source | One AAA alkaline battery, AAA manganese battery, or AAA nickel-metal hydride battery |
| Color | Black |
| External Dimensions (Mouse Body) | Width 52.7mm × Depth 92.1mm × Height 36.4mm |
| Size Classification | S-size |
| Mass (Mouse Body) | Approx. 59g (including battery) |
10. Warranty and Support
ELECOM products are designed for reliability and performance. For warranty information, please refer to the documentation included with your purchase or visit the official ELECOM website.
Customer Support:
For inquiries regarding this product, please contact the ELECOM General Information Center:
- Telephone: 0570-084-465
- FAX: 0570-050-012
- Reception Hours: 10:00 - 19:00 (Open all year round)