Introduction
Thank you for choosing LEDERA A21 150 Watt LED Light Bulbs. These energy-efficient bulbs provide bright, daylight white illumination (5000K) with 2500 lumens, designed for various indoor and outdoor applications. This manual provides essential information for safe installation, operation, and maintenance.
Safety Information
- Always turn off power to the fixture before installing or removing the bulb.
- Do not use with dimmer switches. These bulbs are non-dimmable.
- Ensure the bulb is suitable for the fixture's voltage (100-130V, 60Hz).
- Do not disassemble or modify the bulb.
- Avoid direct eye exposure to the light source when illuminated.
- Suitable for both indoor and outdoor use in appropriate fixtures.
Product Features
- High Brightness: 2500 lumens, equivalent to 150-200W incandescent bulbs, using only 23W.
- Daylight White (5000K): Provides a bright, crisp light ideal for task lighting and general illumination.
- Energy Efficient: Significant energy savings compared to traditional bulbs, with a lifespan of over 25,000 hours.
- Flicker-Free & High CRI: Designed to prevent flickering and provide a Color Rendering Index (CRI) of over 80, restoring true colors.
- Standard E26 Base: Easy installation into most standard light fixtures.
- Wide Beam Angle: 270° beam angle ensures broad light distribution.

Image: LEDERA A21 LED Bulb showcasing its dimensions (2.76 inches width, 5.2 inches height) and key features like 23W LED, 5000K Daylight White, 2500 Lumens, E26 base, 110-130V, 50/60Hz, Non-Dimmable, and High CRI > 80.

Image: A comparison demonstrating the flicker-free performance of the LEDERA A21 Daylight White bulb versus a normal LED bulb with frequent flicker, highlighting eye protection benefits.
Video: Demonstrates the super bright illumination of the 150W A21 LED bulb in various settings, showcasing its wide applicability.
Installation Instructions
- Turn Off Power: Before beginning, ensure the power to the light fixture is turned off at the circuit breaker or wall switch.
- Remove Old Bulb: Carefully unscrew the existing bulb from the fixture. Allow it to cool if it was recently in use.
- Install New Bulb: Screw the LEDERA A21 LED bulb into the E26 base socket. Turn clockwise until it is snug, but do not overtighten.
- Restore Power: Turn the power back on at the circuit breaker or wall switch.
- Test: Turn on the light switch to ensure the bulb is functioning correctly.

Image: A visual guide demonstrating the simple process of screwing the LEDERA bulb into a standard light fixture.
Operating Instructions
These LEDERA A21 bulbs are designed for straightforward operation. Simply use your existing wall switch or fixture switch to turn the light on or off. These bulbs are non-dimmable and should not be used with dimmer switches. Using them with a dimmer may cause damage to the bulb or the dimmer itself.

Image: Illustrates the warning against using non-dimmable LED bulbs with a dimmer switch, showing a crossed-out dimmer.
Maintenance
- Cleaning: Ensure the bulb is cool and the power is off before cleaning. Wipe with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Replacement: Due to their long lifespan, frequent replacement is not expected. When replacement is necessary, follow the installation instructions.
- Storage: If storing bulbs, keep them in their original packaging in a cool, dry place.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up. | No power to the fixture, loose connection, faulty bulb. | Check power supply. Ensure bulb is screwed in tightly. Test with another known working bulb. |
| Bulb flickers. | Used with a dimmer switch, unstable power supply, loose connection. | Remove from dimmer circuit. Check power supply stability. Ensure bulb is screwed in tightly. |
| Light is too dim. | Incorrect bulb wattage for desired brightness, power issue. | Verify bulb specifications meet your needs. Check power supply. |
Specifications
| Feature | Detail |
|---|---|
| Brand | LEDERA |
| Light Type | LED |
| Wattage | 23 Watts |
| Incandescent Equivalent | 150 Watts |
| Bulb Shape Size | A21 |
| Bulb Base | E26 |
| Light Color | Daylight White |
| Color Temperature | 5000 Kelvin |
| Brightness | 2500 Lumens |
| Voltage | 120 Volts (100 to 120 Volts and 60 Hertz) |
| Color Rendering Index (CRI) | 80 |
| Beam Angle | 270 Degrees |
| Lifespan | Over 25,000 hours (approx. 2.86 Years) |
| Indoor/Outdoor Usage | Outdoor (suitable for both indoor and outdoor fixtures) |
| Material Type | Aluminum |
| Special Feature | Energy Efficient, Non-Dimmable |
| Included Components | Bulb included |
Warranty & Support
LEDERA provides a 1-year manufacturer's warranty for this product. For any questions, technical support, or warranty claims, please contact LEDERA customer service or visit the official LEDERA store.
LEDERA Store: https://www.amazon.com/stores/LEDERA/page/7D3338C9-8EEB-44A4-9B01-F2B8027D91BC