Bulbright BHY
Bulbright ST48-4W LED Filament Bulb User Manual
Model: ST48-4W
Product Overview
The Bulbright ST48-4W LED Filament Bulb is designed to provide a warm white light at 2700K, emitting 400 lumens. This bulb combines the classic aesthetic of a vintage incandescent bulb with modern LED technology, offering significant energy savings and a long operational lifespan. It is suitable for various indoor applications, including residential and commercial settings, to create a warm and inviting atmosphere.
Key features include dimmable functionality, an E12 base for easy installation, and compatibility with 110-120VAC electrical systems. The bulb is designed to be energy-efficient, consuming only 4 watts while providing light equivalent to a 40-watt incandescent bulb, leading to up to 85% energy savings. It is also eco-friendly, being CE & RoHS compliant, mercury-free, and free from ultraviolet emissions.
Image: A pack of six Bulbright ST48-4W LED Filament Bulbs, showcasing their clear glass and visible LED filaments.
Setup and Installation
Before installation, ensure the power supply to the light fixture is turned off at the circuit breaker to prevent electrical shock. These bulbs are designed for indoor use only.
- Verify Compatibility: Ensure your light fixture has an E12 base and operates within the 110V-120V AC range.
- Unpack the Bulb: Carefully remove the bulb from its packaging, holding it by the glass body. Avoid touching the metal base with wet hands.
- Screw into Socket: Gently screw the bulb clockwise into the E12 socket until it is snug. Do not overtighten.
- Restore Power: Once the bulb is securely installed, restore power to the light fixture from the circuit breaker.
Image: A detailed diagram illustrating the bulb's dimensions (1.88 inches width, 4.33 inches height) and key lighting parameters such as 400 LM brightness, 4 Watt energy use, 110-130V voltage, 25000 hours lifespan, 2-year warranty, 360° beam angle, and E12 base type.
Operating Instructions
Once installed, the Bulbright ST48-4W LED Filament Bulb operates like a standard light bulb. Simply use the wall switch connected to your fixture to turn the light on or off.
Dimmable Functionality
This bulb is dimmable, allowing you to adjust the light intensity to suit your preference. For optimal performance and to avoid flickering or buzzing, it is recommended to use compatible LED dimmers. Known compatible dimmers include:
- LUTRON DVELV-300P-WH DIVA
- LUTRON DVCL-153P-WH DIVA
If you experience issues with dimming, ensure your dimmer switch is designed for LED bulbs and is compatible with the bulb's wattage range.
Image: This visual guide displays two recommended Lutron dimmer models (DVELV-300P-WH and DVCL-153P-WH) and demonstrates the bulb's brightness at 25%, 50%, 75%, and 100% levels when used with a compatible dimmer.
Maintenance
The Bulbright ST48-4W LED Filament Bulb requires minimal maintenance due to its long lifespan.
- Cleaning: To clean the bulb, ensure the power is off and the bulb has cooled down completely. Gently wipe the glass with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Replacement: While designed for longevity, if a bulb needs replacement, ensure the power is off and the bulb is cool before unscrewing it from the fixture. Dispose of old bulbs according to local regulations.
Safety Precautions:
- Do not touch the bulb when it is hot or in operation.
- Always disconnect power before installing, removing, or cleaning the bulb.
- Do not use in fully enclosed fixtures that may trap heat and shorten the bulb's lifespan.
- Avoid exposing the bulb to water or excessive moisture.
Troubleshooting
If you encounter issues with your Bulbright ST48-4W LED Filament Bulb, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up | No power to fixture; Bulb not screwed in properly; Defective bulb | Check circuit breaker and wall switch; Ensure bulb is securely screwed into socket; Test bulb in another working fixture. |
| Bulb flickers or buzzes | Incompatible dimmer switch; Loose connection; Electrical interference | Replace with a compatible LED dimmer (refer to Operating Instructions); Tighten bulb in socket; Consult an electrician if problem persists. |
| Light is too dim or too bright | Dimmer setting; Incorrect bulb for application | Adjust dimmer to desired brightness; Ensure the bulb's lumen output (400LM) is suitable for your needs. |
Specifications
| Feature | Detail |
|---|---|
| Product Type | LED ST48 Filament Bulb |
| Base Type | E12 |
| Working Voltage | 110V-120V AC |
| Wattage | 4 Watts |
| Incandescent Equivalent | 40 Watts |
| Luminous Intensity | 400 Lumens |
| Color Temperature | 2700K (Warm White) |
| Color Rendering Index (CRI) | 80+ |
| Beam Angle | 360° |
| Dimmable | Yes |
| Material | Metal and High-Strength Glass |
| Dimensions (W x H) | 1.88 inches x 3.93 inches (48mm x 100mm) |
| Lifespan | >25,000 Hours |
| Certifications | CE, RoHS |
Image: This image demonstrates the superior color rendering of a CRI 80+ bulb compared to lower CRI values, showing how colors appear more vibrant and true to life.
Warranty and Support
The Bulbright ST48-4W LED Filament Bulb comes with a 2-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For warranty claims, technical support, or any inquiries regarding your product, please contact the seller or manufacturer through the platform where the purchase was made. Please retain your proof of purchase for warranty validation.
Product Application Examples
The Bulbright ST48-4W LED Filament Bulb's vintage design and warm light make it ideal for various decorative and functional lighting applications.
Image: An example of the bulb installed in a pendant light fixture, illuminating a modern interior space.
Image: The bulbs are used in a commercial setting, providing warm ambient lighting above a bar counter, complementing a neon sign.
Image: A collage showcasing the versatility of the bulb in different fixtures, including industrial-style pendant lights, a multi-bulb pipe fixture, and a table lamp, highlighting its suitability for various decor styles.
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