1. Product Overview
The PLEXTONE EX3 Pro is a high-power magnetic flat panel radiator designed for mobile phones and tablets. It utilizes semiconductor refrigeration technology to provide efficient cooling, ensuring stable performance for gaming and other demanding applications. The device features customizable RGB lighting and a lightweight design for enhanced portability.
Key Features:
- 36W Peak Cooling Power: Designed to maintain device temperature for stable 120 frames per second (FPS) performance, preventing overheating during intense use.
- 7-Blade High-Speed Fan: Provides efficient heat dissipation with minimal noise, ensuring an immersive user experience.
- Heat and Cold Separation Structure: Increases the cooling area by 50% for more effective heat dissipation.
- Lightweight Design (51g): Ideal for users who require precise movements, such as gyroscope players, without adding significant bulk.
- RGB Cool Lighting Effects: Customizable lighting with free switching between modes to personalize your device's aesthetic.


2. Package Contents
- PLEXTONE EX3 Pro Magnetic Flat Panel Radiator
- USB Power Cable (Type-C)
- User Manual
3. Safety Information
Please read all safety instructions before using the device to ensure proper operation and prevent damage.
- Do not expose the device to water or excessive moisture.
- Avoid dropping or subjecting the device to strong impacts.
- Use only the provided USB cable or a certified equivalent for power.
- Ensure the power adapter meets the specified wattage (minimum 45W fast charging head recommended for optimal performance).
- Keep out of reach of children.
- Do not attempt to disassemble or repair the device yourself. Contact customer support for assistance.
4. Setup
4.1 Attaching the Radiator
The EX3 Pro features a magnetic attachment system for easy installation on compatible mobile phones and tablets. Ensure your device has a magnetic surface or use a magnetic sticker (not included) if necessary.
- Clean the back surface of your mobile phone or tablet where the radiator will be attached.
- Align the EX3 Pro radiator with the desired cooling area on your device.
- Allow the magnets to securely attach the radiator to your device. Ensure it is firmly in place before use.

4.2 Power Connection
Connect the provided USB power cable to the Type-C port on the EX3 Pro radiator. Plug the other end of the USB cable into a power source, such as a wall adapter (minimum 45W fast charging head recommended for optimal performance), power bank, or computer USB port.
5. Operating Instructions
5.1 Powering On/Off
Once connected to a power source, the EX3 Pro will automatically power on and begin cooling. To power off, simply disconnect the USB power cable.
5.2 Cooling Modes and RGB Lighting Adjustment
The EX3 Pro features three cooling gears and adjustable RGB lighting effects. A single button on the device controls both functions.

- 1st Gear (Overclocking Cooling): Press the button once. The RGB light will display a "Quick breathing light" effect (RGB flashes quickly). This mode provides maximum cooling performance.
- 2nd Gear (Powerful Cooling): Press the button twice. The RGB light will display a "Slow breathing light" effect (RGB slow flashing). This mode offers strong cooling performance.
- 3rd Gear (Stable Cooling): Press the button three times. The RGB light will display an "RGB horse racing lighting effect" (flow transformation of different colors). This mode provides consistent and stable cooling.
- RGB Lighting Off: Continue pressing the button to cycle through the modes. After the 3rd gear, pressing it again will turn off the RGB lighting while cooling continues.
For optimal cooling performance, a 45W fast charging head is recommended.
6. Maintenance
6.1 Cleaning
To maintain optimal performance, keep the EX3 Pro clean.
- Ensure the device is powered off and disconnected from the power source before cleaning.
- Use a soft, dry cloth to wipe the exterior of the radiator.
- Gently remove any dust or debris from the fan blades and cooling fins using a soft brush or compressed air.
- Do not use harsh chemicals, abrasive cleaners, or immerse the device in water.
6.2 Storage
When not in use, store the EX3 Pro in a cool, dry place away from direct sunlight and extreme temperatures.
7. Troubleshooting
If you encounter issues with your PLEXTONE EX3 Pro, refer to the following common problems and solutions:
- Device not powering on:
- Ensure the USB cable is securely connected to both the radiator and the power source.
- Verify that the power source is active and providing sufficient power (a 45W fast charging head is recommended).
- Try using a different USB cable or power adapter.
- Cooling performance is weak:
- Check if the radiator is securely attached to your device and making good contact with the cooling area.
- Ensure the fan and cooling fins are free from dust and obstructions.
- Confirm that you are using a power adapter with sufficient wattage (45W recommended).
- Cycle through the cooling modes to ensure the desired gear is selected.
- RGB lights are not working:
- Press the control button to cycle through the RGB lighting effects.
- Ensure the device is powered on.
- Unusual noise from the fan:
- Check for any foreign objects obstructing the fan blades.
- Clean the fan area as described in the Maintenance section.
If the problem persists after trying these solutions, please contact customer support.
8. Specifications
Technical Data:
| Feature | Specification |
|---|---|
| Model | EX3 Pro |
| Cooling Power | 36W (Peak) |
| Cooling Method | Semiconductor Refrigeration, Forced Air |
| Fan Type | 7-blade High-Speed Fan |
| Noise Level | ≤35dB (Full power operation) |
| Weight | 51g (Device only), 220g (Item Weight) |
| Dimensions | 70mm diameter (approx.), Parcel: 15 x 11.9 x 3.6 cm |
| Material | 1070 Aviation Grade Aluminum (Heat Sink) |
| Power Connector | USB Type-C |
| Recommended Power Input | 45W Fast Charging Head |
| Compatible Devices | Mobile Phones, Tablets (Large screen size phones only for optimal fit) |
| RGB Lighting | Yes, with multiple effects |


9. Warranty and Support
9.1 Warranty Information
The PLEXTONE EX3 Pro Magnetic Flat Panel Radiator comes with a standard manufacturer's warranty. Please refer to the warranty card included with your purchase or visit the official PLEXTONE website for detailed warranty terms and conditions.
9.2 Customer Support
For technical assistance, troubleshooting, or any inquiries regarding your EX3 Pro, please contact PLEXTONE customer support through their official website or the contact information provided with your product documentation.