1. Introduction
This manual provides essential information for the safe and effective use of your OUTYLTS QL300I 108FT 300 LED Multicolor Christmas String Lights. Please read these instructions thoroughly before installation and operation, and retain for future reference.
2. Safety Information
- The entire string light set, including the wire, LED bulbs, and low power consumption output plug, is UL approved and certified, ensuring safety standards are met.
- The product operates on a safe 29V low voltage.
- Rated IP55 waterproof, these lights are designed to withstand heavy rain and snow, making them suitable for both indoor and outdoor use.
- Always ensure the power adapter is connected to a suitable power outlet and protected from excessive moisture.
- Do not attempt to modify or repair the string lights or power adapter. Contact qualified personnel for assistance.
- Avoid placing lights near heat sources or flammable materials.
3. Product Overview
The OUTYLTS QL300I string lights feature 300 multicolor LEDs spread across 108 feet of wire. They are designed for versatility, offering 8 distinct lighting modes and a memory function to recall your last setting. The end-to-end connectable design allows for expansion up to 4 sets.



4. Setup
4.1 Unpacking
- Carefully remove the string lights from their packaging.
- Untangle the lights gently to avoid damage to the wiring or LEDs.
- Inspect the entire length of the string for any visible damage before plugging in.
4.2 Connecting Multiple Sets
The OUTYLTS QL300I string lights are designed for end-to-end connection, allowing you to extend the illuminated length. You can connect up to 4 sets (totaling 432 feet) in a series.
- Locate the end-to-end plug on one string and the connector on another.
- Align the male and female connectors and push them firmly together.
- Twist the protective cap to secure the connection, ensuring it is watertight for outdoor use.
- Repeat for additional sets, up to a maximum of 4 sets.

5. Operating Instructions
5.1 Powering On/Off
Plug the power adapter into a standard electrical outlet to turn the lights on. Unplug to turn them off.
5.2 Changing Lighting Modes
The OUTYLTS QL300I features 8 distinct lighting modes. To cycle through the modes, locate the button on the UL certified plug.
- Short press the button to switch between the 8 working modes:
- Combination
- In Waves
- Sequential
- Slo-Glo
- Chasing/Flash
- Slow Fade
- Twinkle/Flash
- Steady On
- The lights include an automatic memory function, which remembers your last selected setting when powered off and on again.
5.3 Timer Function
To activate the timer function:
- Long press the button for 3 seconds until the button's green light illuminates. This indicates the timer is activated (6 hours on, 18 hours off cycle).
- If the green light is off, the timer is inactive.
- A short press of the button will change the light working mode without affecting the timer status once activated.

5.4 Decoration Examples
These lights are suitable for various decorative purposes, including:
- Christmas trees
- Gardens and yards
- Fences and porches
- Weddings and parties


Video demonstrating the OUTYLTS QL300I string lights in various outdoor and Christmas tree settings, showcasing different lighting modes.
6. Maintenance
- Cleaning: Disconnect from power before cleaning. Wipe lights and wires with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: When not in use, store the lights in their original packaging or a suitable container in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the lights are completely dry before storing.
- Inspection: Periodically inspect the lights for any signs of wear, damage, or loose connections. Discontinue use if any damage is found.
7. Troubleshooting
- Lights not turning on:
- Ensure the power adapter is securely plugged into a working electrical outlet.
- Check if the power outlet itself is functional by plugging in another device.
- Verify all end-to-end connections are secure if multiple sets are used.
- Lights are dim or flickering:
- Ensure the power supply is stable.
- Check for any loose connections in multi-set configurations.
- Modes not changing:
- Press the mode button firmly and ensure it clicks.
- Unplug and replug the lights to reset the controller, then try changing modes again.
- Timer not activating:
- Ensure you long-press the button for 3 seconds until the green light on the button illuminates.
8. Specifications
| Brand | OUTYLTS |
| Model Number | QL300I |
| Light Source Type | LED |
| Number of LEDs | 300 |
| Light Color | Multicolor |
| Item Length | 108 Feet |
| Connectable | Up to 4 sets (max 432 feet) |
| Power Source | Corded Electric |
| Voltage | 29 Volts |
| Wattage | 5 watts |
| IP Rating | IP55 (Waterproof) |
| Controller Type | Button Control |
| Lighting Modes | 8 Modes with Memory Function |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Material | Copper, Plastic |
| Manufacturer | ZHEJIANG QIANXING LANTERN CO LTD |
9. Warranty and Support
For warranty information or technical support regarding your OUTYLTS QL300I string lights, please refer to the product packaging or contact the seller directly. The manufacturer is ZHEJIANG QIANXING LANTERN CO LTD.