1. Introduction
Thank you for choosing the NOTOC ST58 LED Edison Bulb. This manual provides essential information for the safe and efficient use of your new LED bulbs. Please read these instructions carefully before installation and retain them for future reference.
2. Product Overview
The NOTOC ST58 LED Edison Bulb combines vintage aesthetics with modern LED technology, offering an amber warm glow suitable for various indoor and outdoor applications. These non-dimmable bulbs are designed for longevity and energy efficiency.
Key Features:
- LED Filament Design: Features a transparent glass, ST58 bullet top, and E26 base.
- Warm Ambiance: Produces an amber warm 2300K color temperature with 450 lumens, creating a comfortable and intimate atmosphere.
- Energy Efficient: Consumes only 4 watts, equivalent to a 40-watt incandescent bulb.
- Long Lifespan: Average lifespan of 30,000 hours, providing approximately 16 years of use (based on 5 hours/day).
- Wide Beam Angle: 270 degrees beam angle for broad illumination.
- Eco-Friendly: No lead or mercury, no UV or IR radiation.
- Certifications: ETL, RoHS, and FCC-Listed for safety and quality.
What's in the Box:
- LED Edison Bulbs (Quantity as per pack)

Figure 2.1: Pack of three NOTOC ST58 LED Edison Bulbs.

Figure 2.2: Dimensions and key features of the ST58 LED Edison Bulb.
3. Safety Information
- Always turn off the power supply before installing or replacing bulbs.
- Do not use with dimmers, as these bulbs are non-dimmable. Using them with a dimmer may cause damage to the bulb or the dimmer.
- Ensure the bulb is securely screwed into the E26 base.
- Do not expose to direct water spray or immerse in water. Suitable for indoor and outdoor use in appropriate fixtures.
- Avoid touching the bulb with wet hands.
- If the bulb is damaged, discontinue use immediately and replace it.
- Keep out of reach of children.
4. Setup and Installation
Installation of the NOTOC ST58 LED Edison Bulb is straightforward. Follow these steps:
- Power Off: Ensure the power to the light fixture is turned off at the circuit breaker before beginning installation.
- Remove Old Bulb: Carefully unscrew the existing bulb from the E26 socket.
- Insert New Bulb: Gently screw the NOTOC ST58 LED Edison Bulb into the E26 socket until it is snug. Do not overtighten.
- Power On: Restore power to the light fixture at the circuit breaker.
- Test: Turn on the light switch to ensure the bulb is functioning correctly.

Figure 4.1: Close-up of the bulb's E26 base and LED filament.
5. Operating Instructions
The NOTOC ST58 LED Edison Bulb is designed for simple operation:
- Once installed in a compatible E26 fixture, simply use the fixture's standard ON/OFF switch to control the light.
- These bulbs are non-dimmable. They will operate at their full 450 lumens brightness when turned on.
- The 2300K amber warm light provides a soft, inviting glow, ideal for creating a cozy atmosphere in living rooms, bedrooms, dining areas, and outdoor decorative lighting.

Figure 5.1: Example of the bulb's warm amber illumination.

Figure 5.2: Application examples in different settings.
6. Maintenance
The NOTOC ST58 LED Edison Bulbs require minimal maintenance:
- Cleaning: Ensure the power is off before cleaning. Use a soft, dry cloth to wipe the bulb. 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 steps in Section 4.
7. Troubleshooting
If you encounter issues with your NOTOC ST58 LED Edison Bulb, consider the following:
- Bulb Not Lighting Up:
- Check if the power switch is on.
- Ensure the bulb is screwed in tightly to the socket.
- Verify that the circuit breaker for the fixture is not tripped.
- Test the bulb in another working fixture to confirm it is not faulty.
- Flickering:
- These bulbs are designed to be flicker-free. If flickering occurs, ensure the bulb is not connected to a dimmer switch.
- Check for loose connections in the fixture or wiring.
- Incorrect Color/Brightness:
- Confirm you have the correct 2300K Amber Warm bulb.
- Ensure the power supply is stable (120VAC).
8. Specifications
| Feature | Specification |
|---|---|
| Brand | NOTOC |
| Model Name | ST58 |
| Light Type | LED |
| Wattage | 4 Watts |
| Incandescent Equivalent | 40 Watts |
| Bulb Shape Size | ST18 (ST58 Bullet Top) |
| Bulb Base | E26 |
| Light Color | Amber Warm |
| Color Temperature | 2300 Kelvin |
| Brightness | 450 Lumens |
| Voltage | 120 Volts AC |
| Beam Angle | 270 Degrees |
| Average Life | 30,000 Hours |
| Material | Glass |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Special Feature | Energy Efficient, Non-Dimmable |
| Certifications | ETL, FCC, RoHS |
9. Warranty and Support
NOTOC LED Edison Bulbs are manufactured to high-quality standards and are designed for long-lasting performance. For any product inquiries or support, please refer to the retailer's customer service or the official NOTOC website.