1. Introduction
Thank you for choosing the Onforu 2 Pack 38W LED Black Lights. These powerful blacklight flood lights are designed to create vibrant glow-in-the-dark effects, making them ideal for various applications such as Halloween parties, stage lighting, aquariums, body paint, fluorescent posters, and neon glow events. Featuring a wide beam angle and IP66 waterproof rating, these lights are suitable for both indoor and outdoor use. This manual provides essential information for safe and effective operation.

Figure 1: Onforu 38W LED Black Light
2. Safety Information
- Heat Emission: These lights emit real UVA light and can become hot during operation. Exercise caution when handling and positioning them. Avoid placing them on or near flammable materials, or surfaces that can melt.
- Placement: Ensure the lights are placed in locations inaccessible to children to prevent accidental burns.
- Power Connection: Always use a grounded 3-prong power outlet. Ensure the power cord and plug are in good condition before use.
- Waterproof Rating: The lights are IP66 waterproof, suitable for outdoor use. However, ensure the power plug and switch are protected from direct water exposure unless specifically rated for such conditions.
- Eye Protection: Avoid prolonged direct exposure to the UV light. While designed with a high safety wavelength (385-400 nm), direct staring can cause discomfort.
3. Package Contents
Your Onforu 2 Pack 38W LED Black Lights package includes:
- 2 x Onforu 38W LED Black Light Flood Lights
- 2 x Power Cords with US Plug and inline switch (5.0ft/1.5m each)
- 1 x User Manual
4. Setup
- Unpack: Carefully remove the black lights and all accessories from the packaging.
- Positioning: The lights feature an adjustable bracket for versatile placement. You can use the bracket to:
- Stand the light on a flat surface (e.g., floor, table).
- Mount the light to a wall or ceiling using appropriate screws (not included) through the holes in the bracket.
- Adjust the beam angle up to 180 degrees to direct the light as needed.
- Power Connection: Plug the 3-prong power cord into a standard 110V AC grounded electrical outlet.
- Power Switch: Each light has an inline power switch on its cord for convenient on/off control.

Figure 2: Adjustable bracket and heat sink design

Figure 3: Power cord with 3-prong plug
Video 1: Overview of Onforu 30W LED Black Light features and unboxing process.
5. Operating Instructions
- Turn On/Off: Use the inline switch on the power cord to turn the black light on or off.
- Optimal Use: For the best blacklight effect, use the lights in dark environments or scenes without any other visible light sources. The UVA-level wavelength (385-400 nm) makes most reactive pigments, paints, and dyes glow vibrantly.

Figure 4: Inline ON/OFF switch for easy control

Figure 5: Example of UVA blacklight effect in a dark environment
Video 2: Demonstration of the bright and vibrant blacklight effects.
6. Maintenance
- Cleaning: Disconnect from power before cleaning. Wipe the light's surface with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Waterproof: The IP66 rating ensures protection against dust and powerful water jets. This makes the lights suitable for outdoor use in various weather conditions.
- Storage: When not in use, store the lights in a cool, dry place away from direct sunlight and extreme temperatures.

Figure 6: IP66 Waterproof design for durability
7. Troubleshooting
- Light Not Turning On:
- Check if the power cord is securely plugged into a working outlet.
- Ensure the inline power switch is in the 'ON' position.
- Test the outlet with another device to confirm it has power.
- Weak Glow Effect:
- Ensure the environment is sufficiently dark. Ambient light can diminish the blacklight effect.
- Verify that the objects you are trying to illuminate are fluorescent or UV-reactive.
- Overheating: If the light feels excessively hot, ensure it has adequate ventilation and is not obstructed. Relocate it if necessary to a cooler area or away from flammable materials.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Onforu |
| Model Number | DB30UV |
| Power Source | Corded Electric |
| Light Source Type | LED |
| Light Source Wattage | 38 Watts |
| Voltage | 110 Volts |
| Wavelength | 385-400 nm (UVA) |
| Waterproof Rating | IP66 |
| Beam Angle | 120 degrees |
| Number of LEDs | 66 units |
| Material | Aluminum + Glass |
| Item Dimensions (L x W x H) | 6.29"L x 3.93"W x 1.1"H |
| Power Cord Length | 5.0ft / 1.5m |
9. Warranty & Support
Onforu provides a 2-year warranty for this product. For any questions, technical support, or warranty claims, please contact Onforu customer service through your retailer or the official Onforu website.