Introduction
This manual provides essential information for the safe and effective use of your Philips LED A19 Ultra Definition Dimmable Light Bulbs. These bulbs are designed to offer high-quality, comfortable lighting with excellent color rendering, enhancing the visual experience in your home.

Image: Philips LED A19 Ultra Definition Dimmable Light Bulbs (8-pack).
Safety Information
- Electrical Safety: Always turn off power to the fixture before installing or removing the bulb.
- Voltage Compatibility: Ensure the bulb's voltage (120V) matches your electrical supply. Using an incorrect voltage can damage the bulb or electrical system.
- Indoor/Outdoor Use: These bulbs are suitable for both indoor and outdoor use in appropriate fixtures.
- Dimmer Compatibility: Use with compatible dimmers for optimal performance. Refer to your dimmer's instructions for compatibility.
- Disposal: Dispose of bulbs according to local regulations.
Setup and Installation
- Power Off: Before installation, ensure the power supply to the light fixture is turned off at the circuit breaker or wall switch.
- Remove Old Bulb: Carefully unscrew the existing light bulb from the fixture.
- Insert New Bulb: Screw the Philips LED A19 bulb into the E26 standard base socket. Ensure it is securely tightened, but do not overtighten.
- Restore Power: Turn the power supply back on.
- Test: Turn on the light switch to confirm the bulb is functioning correctly.

Image: Close-up of a single Philips LED A19 bulb, showing the E26 base.
The Philips LED A19 bulb features a standard E26 base and an A19 shape, designed to fit most common light fixtures. Its dimensions are approximately 2.36 inches (6.0 cm) in width and 4.13 inches (10.5 cm) in height.

Image: Dimensional diagram of the Philips LED A19 bulb, indicating 2.36 inches (6.0 cm) width and 4.13 inches (10.5 cm) height.
Operating Instructions
These Philips LED bulbs are designed for simple operation, functioning like traditional incandescent bulbs. They are also dimmable, allowing for adjustable light levels.
- Standard Operation: Simply use your existing light switch to turn the bulb on or off.
- Dimming Functionality: When connected to a compatible dimmer switch, these bulbs can be smoothly dimmed to create various ambiances, from bright functional light to a warm, inviting glow.
- App Control: Some advanced setups may allow for app control, depending on your smart home system and compatible dimmer switches. Refer to your smart home system's documentation for integration details.

Image: Visual representation of the bulb's features, including EyeComfort, CRI95, energy saving, and dimmability.
Key Features
- Ultra Definition (CRI95): Experience true colors with a high Color Rendering Index (CRI) of 95, closely matching natural light and revealing the authentic hues of your surroundings.

Image: A visual comparison demonstrating the enhanced color rendering of CRI 95 lighting compared to standard LED.
- EyeComfort Technology: Designed to meet Philips' strict EyeComfort criteria, these bulbs minimize flicker, glare, and stroboscopic effects, providing comfortable light for your eyes.

Image: An infographic detailing the eight key comfort criteria for Philips EyeComfort technology.

Image: A mother and child engaged in an activity under comfortable, bright lighting, illustrating EyeComfort benefits.
- Daylight (5000K): Emits a crisp, invigorating 5000 Kelvin light, closely resembling natural daylight, ideal for task lighting and creating an energetic atmosphere.

Image: A visual guide demonstrating various color temperatures, from soft white to daylight, in a kitchen setting.
- Energy Saving: These 8-watt LED bulbs provide the equivalent brightness of a 60-watt incandescent bulb, saving up to 80% on energy consumption.
- Long Lasting: Designed for durability, these bulbs offer a lifespan of up to 15,000 hours, or approximately 15 years with average use of 3 hours per day.
- Familiar Glass Design: Combines the classic aesthetic of traditional glass incandescent bulbs with modern energy-efficient LED technology.
Maintenance
Philips LED bulbs require minimal maintenance. Follow these guidelines to ensure optimal performance and longevity:
- Cleaning: Ensure the bulb is cool and the power is off before cleaning. Wipe with a soft, dry cloth. Do not use liquid or abrasive cleaners.
- Inspection: Periodically check bulbs for any visible damage. Replace damaged bulbs immediately.
- Storage: If storing bulbs, keep them in their original packaging in a cool, dry place.
Troubleshooting
| Problem | Possible Cause | Solution |
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| Bulb does not light up. |
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| Bulb flickers or buzzes. |
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| Bulb dims unexpectedly or changes color. |
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| Bulb does not dim. |
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| Bulb fails prematurely. |
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Specifications
| Attribute | Detail |
|---|---|
| Brand | Philips LED |
| Model Number | 573444 |
| Light Type | LED |
| Bulb Shape Size | A19 |
| Bulb Base | E26 |
| Wattage (Actual) | 8 Watts |
| Wattage (Equivalent) | 60 Watts |
| Brightness | 800 Lumen |
| Color Temperature | 5000 Kelvin (Daylight) |
| Color Rendering Index (CRI) | 95 |
| Voltage | 120 Volts |
| Dimmable | Yes |
| Finish | Frosted |
| Average Life | 15,000 Hours |
| Material | Glass |
| Product Dimensions | 2.36"W x 4.13"H |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Included Components | LED A19 Light Bulbs (8) |
Warranty and Support
Your Philips LED A19 Ultra Definition Dimmable Light Bulbs are covered by a 3-year manufacturer warranty.
For warranty claims, technical assistance, or further product information, please visit the official Philips Lighting LED store or contact Philips customer support.
Commitment to Sustainability
Philips, through Signify, is dedicated to environmental responsibility. These products reflect a commitment to reducing environmental impact, including phasing out plastic from packaging and utilizing alternatives such as recycled paper.





