1. Introduction
Thank you for choosing NOTOC LED Edison Bulbs. These 4W, 5500K Cool White bulbs are designed to provide a vintage aesthetic with modern LED efficiency. This manual provides essential information for safe installation, operation, and maintenance of your new bulbs. Please read it thoroughly before use.
2. Safety Information
- Non-Dimmable: These bulbs are non-dimmable. Do not use them with dimmer switches, as this may cause flickering, damage to the bulb, or reduce its lifespan.
- Electrical Safety: Always turn off the power at the circuit breaker before installing or replacing bulbs. Ensure your hands are dry when handling electrical components.
- Indoor Use Only: These bulbs are designed for indoor use in dry locations.
- Proper Base: Ensure the fixture's socket matches the E26 base of the bulb.
- Certifications: Our bulbs are ETL, RoHS, and FCC certified, ensuring high quality and safety standards.

3. Product Overview
The NOTOC ST58 LED Edison Bulb combines classic vintage aesthetics with modern energy-efficient LED technology. Each bulb features a clear glass enclosure with visible LED filaments, mimicking the look of traditional incandescent Edison bulbs.

Key Features:
- Retro Looking: Vintage Edison style, ST58 bullet top shape.
- Light Output: 450 Lumens, 5500K Cool White for a bright, energetic atmosphere.
- Energy Efficient: Only 4 Watts power consumption, equivalent to a 40W incandescent bulb.
- Long Lifespan: Average 30,000 hours, providing approximately 16 years of life (based on 5 hours/day usage).
- Standard Base: E26 medium screw base for easy installation in most standard fixtures.
- Non-Dimmable: Designed for on/off functionality only.

4. Setup and Installation
Installing your NOTOC LED Edison Bulb is a straightforward process. Follow these steps carefully:
- Turn Off Power: Before beginning, ensure the power to the light fixture is turned off at the main circuit breaker to prevent electrical shock.
- Remove Old Bulb (if applicable): If replacing an existing bulb, allow it to cool completely before carefully unscrewing it counter-clockwise from the socket.
- Inspect Fixture: Check the light fixture's socket to ensure it is clean and free of debris. Confirm it is an E26 base socket.
- Install New Bulb: Gently screw the NOTOC LED Edison Bulb clockwise into the E26 socket until it is snug. Do not overtighten.
- Restore Power: Once the bulb is securely installed, turn the power back on at the circuit breaker.
- Test: Turn on the light switch to confirm the bulb is working correctly.
Important Note: These bulbs are non-dimmable. Using them with a dimmer switch can cause damage and void the warranty.
5. Operation
Operating your NOTOC LED Edison Bulb is as simple as flipping a switch. These bulbs are designed for immediate full brightness without warm-up time.
- On/Off Functionality: Simply use your existing light switch to turn the bulb on or off.
- Light Color: The bulbs emit a 5500K Cool White light, ideal for areas requiring clear, bright illumination.
- Applications: Suitable for various indoor settings, including kitchens, bedrooms, living rooms, and decorative fixtures where a vintage look and bright light are desired.



6. Maintenance
NOTOC LED Edison Bulbs require minimal maintenance due to their long lifespan and durable construction.
- Cleaning: Ensure the bulb is cool and the power is off before cleaning. Gently wipe the glass with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- No User-Serviceable Parts: The bulbs do not contain any user-serviceable parts. Do not attempt to disassemble or repair the bulb.
- Disposal: Dispose of old or damaged bulbs according to local regulations for electronic waste.
7. Troubleshooting
If you encounter any issues with your NOTOC LED Edison Bulb, please 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 if the light switch is on. Verify power at the circuit breaker. Ensure the bulb is screwed in securely. Test the bulb in another working fixture. |
| Bulb flickers or hums. | Connected to a dimmer switch or incompatible fixture. | These bulbs are non-dimmable. Remove from any dimmer circuit. Ensure the fixture is compatible with non-dimmable LED bulbs. |
| Light output is too dim. | Incorrect bulb wattage for desired brightness. | Verify the bulb's lumen output (450 Lumens) meets your lighting needs. Consider adding more bulbs or a higher lumen bulb if available. |
| Bulb burns out quickly. | Overheating due to enclosed fixture, voltage fluctuations, or faulty bulb. | Ensure adequate ventilation around the bulb. Check for stable voltage supply. If issues persist, contact customer support. |
If troubleshooting steps do not resolve the issue, please contact NOTOC customer support for further assistance.
8. Specifications
| Specification | Detail |
|---|---|
| Brand | NOTOC |
| Model Name | ST58 |
| Light Type | LED |
| Special Feature | Non Dimmable |
| Wattage | 4 Watts |
| Incandescent Equivalent Wattage | 40 Watts |
| Bulb Shape Size | ST19 (ST58) |
| Bulb Base | E26 |
| Light Color | Cool White |
| Color Temperature | 5500 Kelvin |
| Brightness | 450 Lumens |
| Voltage | 120 Volts (AC) |
| Beam Angle | 270 Degrees |
| Average Life | 30,000 Hours |
| Material | Glass |
| Product Dimensions | 1.38"W x 3.9"H (approx. 2.28 x 2.28 x 5.31 inches) |
| Certifications | ETL, FCC, RoHS |
| Indoor/Outdoor Usage | Indoor |
9. Warranty and Support
For warranty information and customer support, please refer to the product packaging or contact the seller directly through your purchase platform. Keep your proof of purchase for any warranty claims.
For additional information or inquiries, please visit the official NOTOC store on Amazon: NOTOC Store