Satco S21368
Satco 6Pk 4W B11 LED Dimmable Light Bulbs User Manual
Model: S21368 | Brand: Satco
Introduction
This manual provides essential information for the safe and efficient use of your Satco 6-pack 4-watt B11 LED Dimmable Light Bulbs. These energy-saving LED lamps offer a traditional yet contemporary vintage style, designed to elegantly illuminate any room. Each bulb delivers 15,000 hours of warm white light and is fully dimmable.

Image: A pack of six Satco 4W B11 LED Dimmable Light Bulbs, showcasing their clear finish and filament design.
Safety Information
Please read and understand all safety instructions before installing or using these light bulbs. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- Risk of Electric Shock: Always turn off power to the fixture at the circuit breaker or fuse box before installation, removal, or inspection.
- Do Not Use with Emergency Exits: This device is not intended for use with emergency exit fixtures or emergency lights.
- Inspect Before Use: Do not use if the outer lamp envelope (glass bulb) is damaged or broken.
- Indoor Use Only: These bulbs are designed for indoor use.
- Proper Disposal: Dispose of bulbs according to local regulations.
- Compatibility: Ensure the fixture and dimmer switch (if applicable) are compatible with LED bulbs. Consult the Satco website for a complete, up-to-date list of compatible dimmers.
- Non-Compatible Controls: Not compatible with all photo sensors, motion sensors, or timers unless specifically stated.
Product Overview
Key Features
- Energy Efficient: 4-watt LED equivalent to 40-watt incandescent.
- Warm White Light: 2700K color temperature for a comfortable ambiance.
- Dimmable: Compatible with most standard LED dimmers.
- Long Lifespan: Rated for 15,000 hours of operation.
- High Color Rendering: Superior 90 CRI light quality.
- Standard Base: E26 Medium Base for wide compatibility.
- B11 Lamp Shape: Classic candle-shaped design.
- Clear Finish: Provides a traditional aesthetic.


Image: A single Satco B11 LED bulb shown both unlit and illuminated, highlighting its clear glass and visible LED filaments.
Setup and Installation
Installation Steps
- Turn Off Power: Before replacing any bulb, ensure the power to the light fixture is turned off at the circuit breaker or wall switch.
- Allow Cooling: If replacing an old incandescent bulb, allow it to cool down completely before handling.
- Remove Old Bulb: Carefully unscrew the old bulb from the socket by turning it counter-clockwise.
- Insert New Bulb: Gently screw the Satco LED bulb into the E26 Medium Base socket by turning it clockwise until it is snug. Do not overtighten.
- Restore Power: Turn the power back on at the circuit breaker or wall switch.
- Test: Turn on the light switch to confirm the bulb is working correctly.

Image: A detailed view of the E26 medium screw base of the Satco LED bulb, showing the threading for installation.
Operating Instructions
Dimmable Functionality
These Satco LED bulbs are designed to be fully dimmable, allowing you to adjust the light output to your desired brightness level. For optimal performance and to avoid flickering or buzzing, ensure you are using a dimmer switch specifically designed for LED lighting. Refer to the dimmer manufacturer's instructions for proper operation.
- Standard Operation: When connected to a standard on/off switch, the bulb will operate at full brightness.
- Dimming: When connected to a compatible LED dimmer switch, use the dimmer control to adjust the light intensity.
- Compatibility: If you experience issues with dimming, consult the Satco website for a list of recommended compatible dimmers.
Maintenance
Satco LED bulbs require minimal maintenance. Follow these guidelines to ensure their longevity and performance:
- Cleaning: Before cleaning, ensure the power to the fixture is off and the bulb has cooled. Wipe the bulb with a soft, dry cloth. Do not use liquid or abrasive cleaners.
- Replacement: These LED bulbs have a long lifespan. Replace only when the light output significantly diminishes or the bulb ceases to function.
- Handling: Handle bulbs by the base whenever possible to avoid touching the glass, which can leave oils that may affect light output or bulb life.
Troubleshooting
If you encounter issues with your Satco LED bulbs, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up. | No power to the fixture, loose connection, or faulty bulb. | Check circuit breaker/switch. Ensure bulb is screwed in tightly. Test bulb in a known working fixture. |
| Bulb flickers or buzzes. | Incompatible dimmer switch, loose connection, or circuit overload. | Ensure dimmer is LED compatible. Tighten bulb. Reduce number of bulbs on circuit if overloaded. Consult Satco website for compatible dimmers. |
| Light output is too low or too high. | Dimmer setting, or incorrect bulb for fixture. | Adjust dimmer. Ensure bulb wattage equivalent is appropriate for the fixture. |
| Bulb fails prematurely. | Operating outside specified temperature range, voltage fluctuations, or defective product. | Ensure operating environment is within -4°F/-20°C to 113°F/45°C. Contact Satco support if within warranty period. |
Specifications
| Attribute | Value |
|---|---|
| Model Number | S21368 |
| Lamp Shape | B11 |
| Base Type | E26 Medium Base |
| Wattage | 4 Watts |
| Incandescent Equivalent | 40 Watts |
| Voltage | 120V (AC) |
| Color Temperature | 2700K (Warm White) |
| Brightness | 350 Lumens |
| Color Rendering Index (CRI) | 90 |
| Rated Life | 15,000 Hours (approx. 13.7 years based on 3 hrs/day) |
| Dimmable | Yes |
| Finish | Clear |
| Beam Angle | 300° |
| Operating Temperature | -4°F/-20°C to 113°F/45°C |
| Dimensions (MOL x MOD) | 3.58 inches (Length) x 1.38 inches (Diameter) |
| UPC | 045923206757 |


Image: Visual representation of the bulb's dimensions and its "Lighting Facts" label detailing energy usage and light output.
Warranty and Support
These Satco LED bulbs come with a 3-year limited warranty. This warranty is based on operating the LED lamp in environments with ambient temperature ranging from -4°F/-20°C to 113°F/45°C.
For warranty claims, technical support, or to find a complete list of compatible dimmers, please visit the official Satco website:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
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