1. Introduction
This manual provides instructions for the ELECOM Relacon M-RT1DRBK 2.4GHz Wireless Handheld Trackball Mouse. This device is designed for comfortable and versatile cursor control across various operating environments. Please read this manual thoroughly before use to ensure proper operation and to maximize the product's features.

Image 1.1: The ELECOM Relacon M-RT1DRBK handheld trackball mouse and its 2.4GHz USB receiver.
2. Product Overview
The ELECOM Relacon trackball mouse offers a unique handheld design with 10 programmable buttons and adjustable DPI settings for precise control. It operates wirelessly via a 2.4GHz USB receiver.
2.1. Key Features
- Handheld Ergonomic Design: Sculpted for comfort, allowing cursor movement without arm motion. Suitable for both left and right-handed users.
- 10 Programmable Buttons: Customize functions using the "ELECOM Mouse Assistant" software.
- Adjustable DPI: Switch between 500, 1000, and 1500 DPI for varying cursor speeds.
- Smooth Tracking: Features a sensitive trackball with three 2.5mm artificial ruby ball bearings for low-friction movement.
- Easy Maintenance: The trackball is easily removable for cleaning.
- Long Battery Life: Up to 8 months of operation on two AAA batteries.
2.2. Component Identification

Image 2.1: Front and side view of the Relacon trackball mouse with labeled components.
- Red Trackball: For cursor movement.
- Left Button: Primary click function.
- Right Button: Secondary click function.
- Scroll Wheel with Tilt: Vertical scrolling and horizontal scrolling (tilt left/right).
- Back Button: Navigates back in web browsers or applications.
- Forward Button: Navigates forward in web browsers or applications.
- Media Control Buttons: Play/Pause, Volume Up, Volume Down, Previous Track, Next Track.
- Power Switch: Turns the device on or off.
- DPI Switcher: Cycles through 500, 1000, and 1500 DPI settings.
- Strap Hole: For attaching a wrist strap (not included).
3. Setup
3.1. Battery Installation
- Locate the battery compartment cover on the underside of the trackball mouse.
- Slide or lift the cover to open the compartment.
- Insert two AAA batteries, ensuring correct polarity (+/-).
- Replace the battery compartment cover.
The mouse includes a battery remaining light lamp to indicate battery status.
3.2. Connecting the 2.4GHz USB Receiver
- Locate the 2.4GHz USB receiver. It is typically stored within the mouse or packaged separately.
- Insert the USB receiver into an available USB port on your computer or compatible device.
- Turn on the ELECOM Relacon trackball mouse using the Power Switch.
- The device should automatically connect. If not, refer to the Troubleshooting section.
3.3. Software Installation (Optional for Customization)
To customize the 10 programmable buttons, download and install the "ELECOM Mouse Assistant" software.
- Visit the official ELECOM website (www.elecom.net).
- Navigate to the "Mouse Assistant" section.
- Select the appropriate version for your operating system (Windows or macOS).
- Download and follow the on-screen instructions to install the software.

Image 3.1: Step 1 of software download: Locate 'Mouse Assistant' on the ELECOM website.

Image 3.2: Step 2 of software download: Select your operating system.

Image 3.3: Step 3 of software download: Click the 'Download' button.
4. Operating Instructions
4.1. Basic Trackball Use
Hold the trackball mouse comfortably in your hand. Use your thumb to roll the red trackball to move the cursor on the screen. The left and right buttons function as primary and secondary clicks, respectively.

Image 4.1: The Relacon trackball mouse can be used comfortably with either the left or right hand.
4.2. DPI Adjustment
The DPI (Dots Per Inch) button on the side of the mouse allows you to adjust cursor sensitivity. Press the DPI Switcher button to cycle through the available settings:
- 500 DPI (LOW): Slower, more precise cursor movement.
- 1000 DPI (MID): Standard cursor movement.
- 1500 DPI (HIGH): Faster cursor movement.

Image 4.2: Visual representation of cursor speed changes with different DPI settings.
4.3. Button Customization
Utilize the "ELECOM Mouse Assistant" software to assign custom functions to the 10 programmable buttons. This allows for personalized shortcuts and enhanced workflow.
- Open the "ELECOM Mouse Assistant" software after installation.
- Select the ELECOM Relacon M-RT1DRBK from the device list.
- Assign desired functions to each button according to your preferences.
- Save your settings.

Image 4.3: The 10 programmable buttons offer extensive customization options.
4.4. Media Controls
The dedicated media control buttons allow for quick access to playback functions:
- Play/Pause: Starts or pauses media playback.
- Volume Up/Down: Adjusts audio volume.
- Previous/Next Track: Skips to the previous or next media track.
5. Maintenance
5.1. Cleaning the Trackball
Regular cleaning of the trackball and its bearings ensures smooth and accurate cursor movement.
- Turn off the trackball mouse using the Power Switch.
- Locate the small hole on the underside of the mouse.
- Gently push the trackball out through this hole.
- Use a soft, lint-free cloth to wipe the trackball clean.
- Clean the three ruby ball bearings inside the trackball cavity with a cotton swab or a soft cloth to remove any dust or debris.
- Reinsert the trackball into its cavity until it clicks into place.

Image 5.1: The trackball can be easily removed for cleaning and maintenance.

Image 5.2: The ruby bearings provide smooth, low-friction contact for the trackball.
5.2. Battery Replacement
When the battery indicator light signals low power, replace the AAA batteries as described in Section 3.1.
6. Troubleshooting
6.1. Cursor Not Moving or Erratic
- Check Power: Ensure the mouse is turned on and batteries are correctly installed and charged. Replace batteries if necessary.
- Check Connection: Ensure the 2.4GHz USB receiver is securely plugged into a working USB port. Try a different USB port.
- Clean Trackball: Dust or debris on the trackball or bearings can affect performance. Refer to Section 5.1 for cleaning instructions.
- Interference: Move the mouse closer to the USB receiver or away from other wireless devices that might cause interference.
- Re-pair: If the connection is lost, try re-pairing the mouse with the receiver. (Specific re-pairing steps are not detailed in the provided data, typically involves holding a button on the mouse and/or receiver).
6.2. Buttons Not Responding
- Software Check: If using custom button assignments, ensure the "ELECOM Mouse Assistant" software is running and settings are correctly applied.
- Battery Level: Low battery can sometimes affect button responsiveness.
6.3. Device Not Recognized by Computer
- System Requirements: Verify your operating system meets the minimum requirements (Windows 7/8.1/RT8.1/10 or later, macOS 10.14 or later, Android OS).
- USB Port: Try connecting the receiver to a different USB port.
- Driver Installation: For some systems, a generic driver might be needed, though typically plug-and-play.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | M-RT1DRBK |
| Connectivity | 2.4GHz Wireless |
| Movement Detection | Optical |
| DPI Settings | 500 / 1000 / 1500 counts (switchable) |
| Number of Buttons | 10 (programmable) |
| Dimensions (LxWxH) | 4.41 x 1.61 x 2.24 inches (111.5 x 40.7 x 56.6 mm) |
| Weight | 2.7 oz (without battery) |
| Power Source | 2 x AAA batteries (included) |
| Battery Life | Up to 8 months (approximate) |
| Operating System Compatibility | Windows 7, 8.1, RT8.1, 10 or later; macOS 10.14 or later; Android OS |
| Hardware Platform | PC, Mac |

Image 7.1: Physical dimensions and weight of the Relacon trackball mouse.
8. Safety Information
- Do not attempt to disassemble or modify the device.
- Keep the device away from water, moisture, and extreme temperatures.
- Dispose of batteries according to local regulations. Do not mix old and new batteries or different types of batteries.
- Keep out of reach of small children due to small parts (trackball, USB receiver).
9. Warranty and Support
For warranty information, technical support, or further assistance, please visit the official ELECOM website or contact ELECOM customer service. Details can typically be found on the product packaging or the ELECOM support page.





