Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your DELTACO MS-900 Wireless Optical Mouse. Please read this manual thoroughly before using the product to ensure proper functionality and to maximize its lifespan.
The DELTACO MS-900 is a versatile wireless mouse designed for comfortable and efficient use with compatible devices. Its optical sensor provides precise tracking, and its ambidextrous design ensures suitability for both left and right-handed users.
Package Contents
Please verify that all items are present in the package:
- 1 x DELTACO MS-900 Wireless Mouse
- 1 x USB Receiver
- 1 x Instruction Manual (this document)
Setup
Follow these steps to set up your DELTACO MS-900 Wireless Mouse:
- Insert Batteries: Locate the battery compartment on the underside of the mouse. Open the compartment cover and insert the required batteries (typically AA or AAA, not included) according to the polarity indicators (+/-). Close the cover securely.
- Connect USB Receiver: Plug the small USB receiver into an available USB port on your computer, laptop, or compatible device. The operating system should automatically detect and install the necessary drivers. This process may take a few moments.
- Power On Mouse: Locate the power switch on the underside of the mouse (if present) and slide it to the "ON" position. The mouse should now be active and ready for use.
- Test Functionality: Move the mouse and click the buttons to ensure it is working correctly. If the cursor does not move, refer to the Troubleshooting section.

Operating Instructions
The DELTACO MS-900 Wireless Mouse features standard mouse controls:
- Left Click Button: Used for selecting items, opening files, and executing commands.
- Right Click Button: Used for accessing context menus and additional options.
- Scroll Wheel: Used for scrolling through documents and web pages. It can also function as a middle click button for specific applications.
- Power Saving Mode: To conserve battery life, the mouse may enter a low-power sleep mode after a period of inactivity. Simply move the mouse or click a button to wake it up.
Maintenance
To ensure optimal performance and longevity of your mouse:
- Cleaning: Use a soft, dry cloth to clean the mouse surface. For stubborn dirt, a slightly damp cloth can be used, but ensure no moisture enters the internal components. Avoid harsh chemicals or abrasive cleaners.
- Battery Replacement: When the mouse performance degrades or stops responding, replace the batteries with new ones of the correct type and polarity. Dispose of old batteries responsibly.
- Storage: When not in use for extended periods, turn off the mouse to conserve battery life. Store it in a dry, dust-free environment.
Troubleshooting
If you encounter issues with your DELTACO MS-900 mouse, refer to the following table:
| Problem | Possible Cause | Solution |
|---|---|---|
| Mouse not responding / Cursor not moving |
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| Cursor movement is erratic or lagging |
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| Buttons or scroll wheel not working |
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Specifications
Key technical specifications for the DELTACO MS-900 Wireless Mouse:
| Brand | DELTACO |
| Model Name | MS-900 |
| Connectivity Technology | Wireless (USB Receiver) |
| Movement Detection Technology | Optical |
| Number of Buttons | 3 (Left, Right, Scroll Wheel/Middle Click) |
| Hand Orientation | Ambidextrous |
| Power Source | Battery Powered (Batteries not included) |
| Compatible Devices | Computers, Laptops, Smartphones, Tablets (with appropriate USB-OTG adapter if needed) |
| Package Dimensions | 40.8 x 16.5 x 4.3 cm |
| Weight | 120 g |
Warranty and Support
For warranty information or technical support, please contact your retailer or visit the official DELTACO website. Keep your proof of purchase for any warranty claims.
For further assistance, please refer to the contact information provided with your product packaging or on the DELTACO official support channels.







