Introduction
This manual provides essential information for the safe and effective use of your Sylvania TruWave Natural Series PAR38 LED Light Bulb, Model 40903. This energy-efficient, dimmable LED bulb is designed to provide light that closely mimics natural sunlight, aiming to reduce unnecessary blue light and enhance visual comfort.
Key Features
- TruWave Technology: Engineered to minimize unnecessary blue light, promoting visual comfort and supporting natural sleep/wake cycles.
- Natural Light Spectrum: Delivers light most like the sun's natural light, enhancing the appearance of colors, whites, and skin tones.
- Energy Efficient: 14W LED equivalent to a 120W incandescent bulb, offering significant energy savings.
- Dimmable: Provides adjustable light output to suit various needs and preferences.
- Long-Lasting: Designed for extended operational life.
- PAR38 Shape with Medium Base (E26): Suitable for a wide range of fixtures, including outdoor applications.

Image: Sylvania TruWave PAR38 LED Light Bulb in its retail packaging, highlighting its features and specifications.
Setup and Installation
- Safety First: Before installation, ensure the power to the fixture is turned off at the circuit breaker to prevent electrical shock.
- Check Compatibility: Verify that your fixture is compatible with PAR38 bulb shape and E26 medium base. Ensure the fixture can support the bulb's dimensions and weight.
- Remove Old Bulb: Carefully unscrew the existing bulb from the fixture. Allow it to cool if it has been recently in use.
- Install New Bulb: Gently screw the Sylvania TruWave PAR38 LED bulb into the socket until it is finger-tight. Do not overtighten.
- Restore Power: Turn the power back on at the circuit breaker.
- Test: Turn on the light switch to confirm the bulb is working correctly.

Image: A detailed view of the Sylvania TruWave PAR38 LED Light Bulb, showing its E26 medium base and reflector design.
Operating Instructions
The Sylvania TruWave PAR38 LED Light Bulb operates like a standard light bulb. Simply use your existing light switch to turn it on or off.
- Dimmable Functionality: If connected to a compatible dimmer switch, you can adjust the brightness level of the bulb. Ensure your dimmer switch is designed for LED lighting to avoid flickering or performance issues.
- Outdoor Use: This bulb is rated for outdoor usage. Ensure it is installed in a suitable outdoor fixture that protects it from direct exposure to water, unless the fixture itself is rated for such exposure.
Maintenance
- Cleaning: To clean the bulb, ensure the power is off and the bulb is cool. Wipe with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Replacement: This LED bulb has a long lifespan. When replacement is eventually needed, follow the installation steps in reverse.
- Disposal: Dispose of old LED bulbs according to local regulations for electronic waste.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up. | No power to the fixture, loose connection, or faulty bulb. | Check circuit breaker. Ensure bulb is screwed in tightly. Test bulb in another working fixture. |
| Bulb flickers or hums. | Incompatible dimmer switch or loose connection. | Ensure dimmer is LED-compatible. Tighten bulb. If problem persists, replace dimmer switch. |
| Light output is too low or too high. | Dimmer setting or incorrect bulb for desired brightness. | Adjust dimmer. Verify bulb brightness (lumens) meets your needs. |
Understanding TruWave Technology
Sylvania's TruWave Technology is designed to provide a lighting experience that closely emulates natural sunlight. This involves minimizing the peak of intense blue light often found in standard LED bulbs, which can contribute to eye strain and disrupt natural sleep patterns.

Image: This image illustrates the concept of natural light promoting a healthy sleep cycle, a key benefit of TruWave Technology.

Image: An indoor scene with a father and child, demonstrating how TruWave lighting can bring natural colors and warmth into the home.

Image: A woman and baby in a well-lit room, highlighting the benefit of natural lighting in reducing eye fatigue.

Image: A kitchen interior showcasing how TruWave lighting minimizes blue light for a comfortable home environment.

Image: A visual comparison of different light color temperatures, demonstrating the choice available for users.
Informational Videos on TruWave Technology:
Do More with TruWave Lights by SYLVANIA
Video: This video explains how Sylvania TruWave lights offer more than just illumination, focusing on their benefits for a comfortable home environment and natural light simulation.
Discover SYLVANIA TruWave LED Natural Series
Video: An overview of the Sylvania TruWave LED Natural Series, detailing its features and advantages for daily living.
SYLVANIA Natural Light Series with TruWave Technology
Video: This video provides further insight into the Sylvania Natural Light Series and the underlying TruWave Technology, emphasizing its benefits for users.
Natural Light for Natural Living with Madi Teeuws
Video: Madi Teeuws shares her experience with Sylvania TruWave lighting, focusing on how it supports a natural lifestyle and well-being.
Specifications
| Feature | Detail |
|---|---|
| Brand | LEDVANCE (Sylvania) |
| Model Name | 40903 |
| Light Type | LED |
| Bulb Shape Size | PAR38 |
| Bulb Base | E26 Medium |
| Wattage | 15.5 Watts |
| Incandescent Equivalent Wattage | 120 Watts |
| Brightness | 1250 Lumens |
| Color Temperature | 3000 Kelvin (Natural White) |
| Color Rendering Index (CRI) | 90 |
| Dimmable | Yes |
| Voltage | 120 Volts (100 to 120 Volts and 60 Hertz) |
| Average Life | 25000 Hours |
| Indoor/Outdoor Usage | Outdoor |
| Material | Glass |
| Item Weight | 11.7 ounces (0.73 Pounds) |
| Included Components | 1 LED light bulb |
Warranty Information
This Sylvania TruWave LED Light Bulb comes with a 5-year warranty. For detailed terms and conditions, please refer to the official Sylvania/LEDVANCE website or contact customer support.
Support and Contact
For further assistance, technical support, or warranty claims, please visit the official LEDVANCE website or contact their customer service department.
- Manufacturer: SYLVANIA (LEDVANCE)
- Website: Visit the LEDVANCE Store on Amazon (for product information)
- General Inquiries: Refer to the packaging or manufacturer's website for specific contact details.





