1. Product Overview
The EXF 4-Pack Fairy Lights are versatile, battery-operated LED string lights designed for both indoor and outdoor decorative purposes. Each pack contains four strands, with each strand measuring 16 feet (5 meters) and featuring 50 warm white LEDs. These lights include a convenient timer function and are constructed with waterproof wiring for durability.

Image 1: EXF 4-Pack Warm White Fairy Lights
2. Setup and Battery Installation
Each strand of fairy lights requires 3 AA batteries (not included) for operation. Follow these steps to install the batteries:
- Locate the battery case for one of the fairy light strands.
- Slide open the battery case cover. An arrow on the case typically indicates the direction to slide.
- Insert 3 AA batteries into the designated slots, ensuring correct polarity (+ and - terminals match the markings inside the case).
- Slide the battery case cover back into place until it clicks securely.
- Repeat for the remaining three fairy light strands.

Image 2: Battery Case with ON/OFF/TIMER Switch
3. Operating Instructions
The battery case features a three-position switch to control the lights:
- ON: Moves the switch to the 'ON' position to keep the lights continuously illuminated.
- OFF: Moves the switch to the 'OFF' position to turn the lights off.
- TIMER: Moves the switch to the 'TIMER' position to activate the automatic timer function.
Timer Function
When the switch is set to 'TIMER', the fairy lights will automatically operate on a 6-hour ON and 18-hour OFF cycle. For example, if you switch the lights to 'TIMER' at 6:00 PM, they will stay on until 12:00 AM, then turn off and automatically turn back on at 6:00 PM the next day. This cycle repeats daily as long as the batteries have sufficient power.

Image 3: Timer Function Explained
4. Product Features
Waterproof Wire
The LED string itself is designed to be waterproof, making it suitable for use in various indoor and outdoor environments, including wet conditions. However, it is crucial to note that the battery case is not waterproof. When using the lights outdoors, ensure the battery case is protected from rain, snow, or direct water exposure to prevent damage.

Image 4: Waterproof Wire Demonstration
Flexible and Cuttable Design
The fairy lights feature a durable and bendable silver wire, allowing for easy shaping and wrapping around various objects such as furniture, plants, windows, or curtains. This flexibility enables creative decorative arrangements. Additionally, the wire is cuttable, meaning you can trim it to your desired length without affecting the functionality of the remaining lights.

Image 5: Creative Uses of Flexible Fairy Lights
5. Maintenance
- Battery Replacement: When the lights dim or stop working, replace all 3 AA batteries in the battery case with new ones, ensuring correct polarity.
- Cleaning: To clean the lights, gently wipe the wire and LEDs with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Storage: When not in use for extended periods, remove the batteries from the case to prevent leakage and corrosion. Coil the light strands neatly to avoid tangling and store them in a cool, dry place.
6. Troubleshooting
- Lights not turning on:
- Check if the batteries are inserted correctly with the right polarity.
- Ensure the batteries are new or fully charged.
- Verify that the switch on the battery case is set to 'ON' or 'TIMER'.
- Timer function not working:
- Confirm the switch is firmly in the 'TIMER' position.
- The timer cycle begins from the moment you switch it to 'TIMER'. If you want to reset the timing, switch it to 'OFF' and then back to 'TIMER' at your desired start time.
- Lights are dim:
- This usually indicates low battery power. Replace the batteries.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | EXF |
| Model Number | YHY-BO50LED |
| Light Color | Warm White |
| Number of LED Lights per Strand | 50 |
| Length per Strand | 16 feet (5 meters) |
| Power Source | 3 AA Batteries (per strand, not included) |
| Special Features | Timer (6H ON/18H OFF), Waterproof Wire |
| Indoor/Outdoor Usage | Indoor/Outdoor (Battery case not waterproof) |
| Material | Copper Wire |
| Color Temperature | 2500 Kelvin |
| Number of Items (in pack) | 4 |
8. Warranty and Support
For any questions or issues regarding your EXF Fairy Lights, please contact our customer service team. We are committed to providing outstanding customer service and will respond to your inquiries within twenty-four hours.
For further assistance, please refer to the contact information provided with your purchase or visit the official EXF store online.