1. Introduction
Thank you for choosing the UTHAI 2-in-1 Wireless Writing Pen Mouse. This versatile device combines the functionality of a wireless mouse with a presentation remote, offering both 2.4G and Bluetooth dual-mode connectivity. Its ergonomic pen-style design provides a comfortable grip for precise control and effortless navigation, making it ideal for various applications including presentations, teaching, and general computer use. This manual will guide you through the setup, operation, and maintenance of your new device.
2. Safety Information
- Keep the device away from water and other liquids to prevent damage.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to disassemble or repair the device yourself. Contact qualified service personnel if needed.
- Store the device in a cool, dry place when not in use.
- Dispose of batteries according to local regulations.
3. Package Contents
Please check the package for the following items:
- UTHAI 2-in-1 Wireless Writing Pen Mouse
- USB Receiver (for 2.4G mode)
- Charging Cable (Type-C)
- User Manual (this document)
4. Product Overview
Familiarize yourself with the buttons and ports of your pen mouse:

1. Left Key (Next Page in PPT Mode)
2. Right Button (Previous Page in PPT Mode)
3. Middle Key F5 (Full Screen Playback in PPT Mode)
4. DPI Key / Toggle Key
5. Double Click Key
6. Power Switch
7. PB Key (Pairing Button / Mode Switch)
8. Charging Port
5. Setup and Connection
5.1. Charging the Pen Mouse
Connect the provided Type-C charging cable to the charging port (8) on the pen mouse and to a USB power source. The indicator light will show charging status and turn off when fully charged.
5.2. 2.4G Wireless Mode Connection
- Turn on the pen mouse using the Power Switch (6).
- If not already paired, the red indicator light will flash slowly.
- Press and hold the PB Key (7) for 3 seconds. The indicator light will flash rapidly, indicating it's in pairing mode.
- Plug the USB receiver into an available USB port on your computer or compatible device.
- After a successful connection, the mode indicator light will remain on for 3 seconds.
5.3. Bluetooth Mode Connection
- Turn on the pen mouse using the Power Switch (6).
- If not already paired, the blue indicator light will flash slowly.
- Press and hold the PB Key (7) for 3 seconds. The indicator light will flash rapidly, indicating it's in pairing mode.
- On your device (laptop, tablet, smartphone, smart TV), go to Bluetooth settings and search for new devices.
- Select "PLM168 Mouse" from the list of available devices to connect.
- After a successful connection, the mode indicator light will remain on for 3 seconds.
5.4. Switching Between 2.4G and Bluetooth Modes
Short press the PB Key (7) to toggle between 2.4G (red light) and Bluetooth (blue light) modes.
6. Operating Instructions
6.1. Basic Mouse Functions
- Left Click: Press the Left Key (1).
- Right Click: Press the Right Button (2).
- Scroll: Use the scroll wheel (integrated with Middle Key 3).
- Double Click: Press the dedicated Double Click Key (5).
6.2. DPI Adjustment
Press the DPI Key (4) to cycle through different DPI sensitivities (e.g., 800/1200/1600 DPI) for varying cursor speeds. The blue light will flash to indicate a change in DPI setting.
6.3. PPT Presentation Mode
The pen mouse features a dedicated PPT mode for presentations:
- Activate PPT Mode: Press and hold the DPI Key (4) for 3 seconds. The blue light will flash to confirm entry into PPT mode.
- Navigation in PPT Mode:
- Next Page: Press the Left Key (1) (functions as keyboard 'down' key).
- Previous Page: Press the Right Button (2) (functions as keyboard 'up' key).
- Full Screen Playback: Press the Middle Key F5 (3) (functions as keyboard 'F5' key).
- Exit PPT Mode: Press and hold the DPI Key (4) again for 3 seconds to restore the left, right, and center mouse button functions to their standard mouse mode.

The pen mouse can be used for writing purposes, offering free and natural input.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the surface of the pen mouse. Do not use harsh chemicals or abrasive materials.
- Storage: Store the device in a protective case or a safe place to prevent scratches or damage when not in use.
- Battery Care: Avoid fully discharging the battery frequently. Charge the device regularly to maintain battery health.
8. Troubleshooting
- Q: The pen mouse is not responding.
- A: Ensure the device is powered on and fully charged. Check the connection mode (2.4G or Bluetooth) and re-pair if necessary. For 2.4G mode, ensure the USB receiver is properly plugged in.
- Q: The cursor movement is erratic or slow.
- A: Try adjusting the DPI setting using the DPI Key (4). Ensure the optical sensor on the bottom of the mouse is clean and free from obstructions. Make sure you are within the 10-meter operating range.
- Q: PPT mode functions are not working.
- A: Ensure you have correctly activated PPT mode by pressing and holding the DPI Key (4) for 3 seconds until the blue light flashes. If issues persist, try re-pairing the device.
- Q: Does it come with a USB connector?
- A: Yes, the 2.4G wireless mode utilizes a USB receiver for connection to your device.
9. Specifications
| Feature | Specification |
|---|---|
| Brand Name | UTHAI (also known as Promi) |
| Model | PLM-PR-168 |
| Connectivity | 2.4Ghz Wireless, Bluetooth Dual Mode |
| Number of Buttons | 5 |
| DPI | 1600 |
| Operation Mode | Opto-electronic |
| Power Type | Rechargeable |
| Battery Type | 320mAh Polymer Lithium Battery |
| Rated Voltage | 3V |
| Rated Current | 5mA |
| Remote Control Distance | Less than 10 meters |
| Carrier Frequency | 2401MHz-2480MHz |
| Tracking Speed | 14 inches per second |
| Material | ABS |
| Hand Orientation | Right |
| Product Weight | 26 grams |
| Gross Weight (Package) | 121 grams |
| Dimensions (L x W) | 7.08 inches x 0.47 inches |
| Compatible Devices | Laptops, Desktop Computers, Tablets, Smartphones, Smart TVs |
| Available Colors | Black, White (also Blue, Purple, Gray mentioned in some specifications) |
| Certification | CE |
| Time to Market | 2018 |

Length: 7.08 inches, Width: 0.47 inches
10. User Tips
- For optimal performance, ensure a clear line of sight between the pen mouse and the USB receiver (if using 2.4G mode) or your Bluetooth-connected device.
- When using for presentations, practice switching between mouse and PPT modes to ensure smooth transitions.
- Keep the pen mouse charged to avoid interruptions during important tasks.
11. Warranty and Support
This UTHAI product comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or natural disasters.
For warranty claims or technical support, please contact your retailer or the manufacturer's customer service with your proof of purchase.

All products include a 1-year warranty.





