1. Introduction
Thank you for choosing DAYBETTER Outdoor String Lights. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your 120ft string light set. Designed for outdoor use, these lights feature 40 shatterproof ST38 LED bulbs, emitting a 2200K warm white light, suitable for various outdoor settings.

Image 1: Overview of the DAYBETTER 120ft Outdoor String Lights, showing the string of 40 ST38 shatterproof bulbs and the packaging indicating 120ft, 2200K, and shatterproof features.
2. Safety Information
- Ensure the power source matches the voltage requirements (110 Volts AC).
- Do not exceed the maximum wattage for the string. Each bulb is 1 Watt.
- Always unplug the lights from the power source before installation, maintenance, or when replacing bulbs.
- Inspect the string lights for any damage before each use. Do not use if the cord or bulbs are damaged.
- Keep away from flammable materials.
- Ensure all connections are secure and protected from moisture.
- This product is designed for outdoor use and is weatherproof, but avoid submerging in water.
- The bulbs are shatterproof plastic, reducing the risk of breakage.
3. Package Contents
- 1 x 120ft String Light with 40 ST38 LED Bulbs (2200K Warm White)
- 1 x Extra ST38 LED Bulb
- 1 x Spare Fuse (located in the plug)
4. Setup and Installation
Follow these steps for proper installation:
- Plan Your Layout: Determine the desired path for your string lights. Consider where the power outlet is located and how you will secure the lights.
- Secure the String: Use appropriate fasteners (hooks, zip ties, or guide wires, not included) to secure the string along your patio, pergola, fence, or other structures. Ensure the string is taut but not overly strained.
- Install Bulbs: Carefully screw each ST38 LED bulb into its socket. The bulbs are shatterproof, but gentle handling is recommended.
- Connect to Power: Plug the string lights into a compatible 110V AC outdoor-rated power outlet.
- Extend the Length (Optional): These string lights feature an end-to-end plug, allowing you to connect multiple sets. Up to 30 string lights can be connected in series. Ensure the total wattage does not exceed the circuit's capacity.

Image 2: Close-up of the string light plug, showing the spare fuse compartment and the end-to-end connector for extending the light string.

Image 3: Visual representation of easy installation hooks, the protective fuse in the plug, and the end-to-end plug feature for connecting multiple strings.
5. Operating Instructions
Once installed and plugged in, the lights will illuminate. These lights are designed to provide a warm, inviting ambiance with their 2200K color temperature. They are suitable for continuous outdoor use.
- Power On/Off: Connect or disconnect the plug from the power outlet to turn the lights on or off.
- Dimming: The lights are dimmable. To utilize this feature, connect the string lights to a compatible outdoor dimmer (not included).

Image 4: A visual comparison showing the warm yellow glow of 2200K lighting (left) versus the slightly cooler 2700K lighting (right).
6. Maintenance
- Cleaning: Disconnect from power. Wipe bulbs and cord with a soft, damp cloth. Do not use harsh chemicals.
- Bulb Replacement: If a bulb needs replacement, ensure the string is unplugged. Unscrew the old bulb and screw in a new ST38 LED bulb. A spare bulb is included.
- Storage: During prolonged periods of non-use, especially in extreme weather conditions, it is recommended to unplug and store the lights in a cool, dry place.
- Fuse Replacement: If the entire string fails to light, check the fuse located in the plug. Unplug the string, slide open the fuse compartment, and replace the fuse with a new one of the same rating.

Image 5: The string lights are shown in a rainy outdoor setting on the left, highlighting their waterproof capability, and on the right, a bulb is depicted as shatterproof, lying intact on the ground.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lights do not turn on. | No power, loose connection, or blown fuse. | Check power outlet. Ensure plug is fully inserted. Inspect and replace fuse if necessary. |
| Some bulbs are not lighting. | Loose or faulty bulb. | Tighten or replace the non-working bulb(s). |
| Lights flicker. | Unstable power, loose connection, or incompatible dimmer. | Ensure stable power supply. Check all connections. If using a dimmer, ensure it is compatible with LED string lights. |
8. Specifications
- Brand: DAYBETTER
- Model Number: CVT121B040-NYB0
- Length: 120 Feet
- Number of Bulbs: 40 + 1 spare
- Bulb Type: ST38 LED, Shatterproof Plastic
- Bulb Base: E12
- Color Temperature: 2200 Kelvin (Warm White)
- Brightness (per bulb): 60 Lumens
- Wattage (per bulb): 1 Watt
- Voltage: 110 Volts AC
- Power Source: Corded Electric
- Indoor/Outdoor Usage: Outdoor
- Special Features: Corded, Rust Resistant, Weather Resistant, Dimmable
- Material: Plastic
- Estimated Yearly Energy Cost: $0.12 (Based on 3 hrs/day, 11 kWh. Cost depends on rates and use.)
- Lifetime: 30,000 hours
- Connectable: Yes, up to 30 strings end-to-end

Image 6: A graphic detailing lighting facts such as brightness (60 lumens), estimated yearly energy cost ($0.12), lifetime (30,000 hours), light appearance (2200K), and energy used (1 Watt), alongside a visual comparison of 2200K and 2700K light temperatures.
9. Warranty and Support
For warranty information or technical support, please contact DAYBETTER customer service. Refer to your purchase documentation for specific warranty terms and contact details.
You can visit the official DAYBETTER store for more products and support: DAYBETTER Store





