1. Introduction
Thank you for choosing the ISTOYO Two-Sided UV Resin Light. This device is designed for efficient and even curing of UV resin, making it ideal for jewelry making, DIY crafts, and other resin projects. Its innovative double-sided design and adjustable timer settings provide flexibility and optimal results. Please read this manual thoroughly before use to ensure proper operation and safety.

Image: The ISTOYO Two-Sided UV Resin Light, displayed with various resin crafts and bottles of UV resin, illustrating its application in creative projects.
2. Safety Instructions
- Eye Protection: Avoid direct exposure of eyes to the UV light. Prolonged exposure can be harmful.
- Skin Protection: Minimize direct skin exposure to UV light.
- Ventilation: Use the device in a well-ventilated area to dissipate any fumes from resin curing.
- Children and Pets: Keep the device out of reach of children and pets.
- Power: Always unplug the device when not in use or during cleaning. Do not use if the power cord is damaged.
- Water: Do not expose the device to water or use it in damp environments.
3. Package Contents
Verify that all items are present in the package:
- UV Light Unit (x1)
- USB Cable (x1)
- User Manual (x1)
- Acrylic Plate (x1)

Image: Contents of the ISTOYO Two-Sided UV Resin Light package, including the UV light unit, USB cable, user manual, and acrylic plate.
4. Product Features
- Double-Sided Curing: The device features a double-sided design, allowing simultaneous curing from both top and bottom, significantly reducing curing time and ensuring even results.
- Digital Display & Longer Time Modes: Equipped with a clear digital display and three preset curing time modes: 2 minutes, 3 minutes, and 5 minutes.
- 2-in-1 Split Usage: The UV lamp is designed to be detachable, allowing it to be used as a combined unit for double-sided curing or as two separate units for single-sided curing, accommodating various project needs.
- 365+405nm Dual Wavelength: The UV light utilizes a dual wavelength of 365nm and 405nm, optimized for strong and effective curing of UV resin without affecting its performance.
- Powerful Magnetic Connection: Features upgraded flat magnetic suction for an easy and stable connection when combining the two halves.

Image: A visual representation of the double-sided curing mechanism, with UV light emitted from both the upper and lower sections of the device.

Image: The digital display and time setting buttons (2M, 3M, 5M) on the UV resin light, indicating precise control over curing duration.

Image: The UV light demonstrating its 2-in-1 functionality, showing both the combined and separated configurations for versatile use.

Image: An illustration highlighting the optimal 365+405nm dual wavelength for effective UV resin curing.

Image: A visual comparison demonstrating the strong and stable magnetic connection of the ISTOYO UV light compared to less secure alternatives.
5. Setup
- Connect the Halves: Align the two halves of the UV light unit and allow the magnetic suction to connect them securely.
- Prepare Acrylic Plate: Carefully tear off the protective films from both sides of the acrylic plate.
- Insert Acrylic Plate: Insert the prepared acrylic plate between the two connected UV light halves.
- Connect Power: Connect the USB power cable to the USB-C port on the top side of the UV light unit and plug the other end into a suitable power adapter (not included) or USB power source.

Image: A step-by-step visual guide demonstrating the assembly and initial setup of the UV resin light.
6. Operating Instructions
- Placement: Place your UV resin craft project on the acrylic plate, ensuring it is positioned centrally for optimal exposure to both top and bottom UV lights.
- Select Time Mode: Press the power button (marked with a circular arrow) to cycle through the available time settings: 2 minutes (2M), 3 minutes (3M), and 5 minutes (5M). The selected time will be displayed on the digital screen.
- Start Curing: Once a time mode is selected, the UV lights will activate, and the timer will begin counting down.
- Completion: The UV lights will automatically turn off when the selected time has elapsed.
- Split Usage: To use the device in split mode, gently separate the two magnetic halves. Connect the USB power cable to the USB-C port on the desired half. This allows for curing larger or irregularly shaped items by positioning the individual light units as needed.
Video: An official product video from ISTOYO demonstrating the features and usage of the Two-Sided UV Resin Light, including its double-sided curing and split functionality.
Video: An official product video from ISTOYO showcasing the Two-Sided UV Resin Light in action, highlighting its effectiveness for resin curing, jewelry making, and DIY crafts.
7. Maintenance
- Cleaning: Wipe the exterior of the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners, as they may damage the surface.
- Storage: Store the UV resin light in a cool, dry place away from direct sunlight and moisture when not in use.
- Acrylic Plate: Clean the acrylic plate regularly to ensure optimal UV light transmission.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| UV Light does not turn on. | Power cable not connected properly. Magnetic connection between halves is loose. | Ensure the USB cable is securely connected to both the device and the power source. Verify that the two halves are magnetically connected correctly. |
| Resin is not curing properly (still sticky). | Protective films still on acrylic plate. Insufficient curing time. Resin type not compatible with UV light. Resin layer is too thick. | Remove all protective films from the acrylic plate. Increase curing time or repeat the curing cycle. Ensure you are using UV-curable resin. Cure resin in thinner layers. |
9. Specifications
- Brand: ISTOYO
- Model Name: UV2S (uv light pro)
- Light Source Type: UV
- Number of Light Sources: 2 (double-sided)
- Material: Acrylic, Metal
- Product Dimensions: 7.09 x 3.94 x 4.72 inches
- Item Weight: 1.03 pounds
- UV Wavelength: 365nm + 405nm
- Timer Settings: 2 minutes, 3 minutes, 5 minutes
- Power Input: USB Type-C
10. Warranty and Support
ISTOYO is committed to providing high-quality products. If you encounter any issues or have questions regarding your ISTOYO Two-Sided UV Resin Light, please refer to the contact information provided with your purchase or visit the official ISTOYO support channels. We strive for 100% customer satisfaction and are here to assist you.