Introduction
Thank you for choosing the SZGMJIA 120W LED Barn Light. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your new outdoor lighting fixture. Please read these instructions thoroughly before installation and retain them for future reference.
This 120W LED barn light delivers 18000 lumens of 5000K daylight white illumination, designed for outdoor applications such as yards, barns, farms, parking lots, garages, and alleyways. It features a built-in dusk-to-dawn photocell sensor for automatic operation and is constructed with weather-resistant materials for durability.
Safety Information
- WARNING: Risk of electric shock. Disconnect power at the fuse or circuit breaker before installing or servicing.
- Installation must be performed by a qualified electrician in accordance with all applicable national and local electrical codes.
- Do not install on dimmable circuits. This fixture is not dimmable.
- Ensure the supply voltage is compatible with the fixture's requirements (AC120-277V).
- Do not handle the fixture with wet hands or when standing on wet or damp surfaces.
- Avoid looking directly into the LED light source when illuminated, as it may cause eye damage.
- Keep flammable materials away from the fixture during operation.
Package Contents
Verify that all components are present before beginning installation:
- 1 x SZGMJIA 120W LED Barn Light with Photocell
- 1 x Installation Accessories Kit (screws, anchors, wire nuts)
- 1 x Installation & Operation Guide (this manual)

Figure 1: The SZGMJIA 120W LED Barn Light and its included installation accessories, such as screws, anchors, and wire nuts.
Setup and Installation
The SZGMJIA 120W LED Barn Light offers versatile mounting options, including direct wall mount and arm mounting for poles (pole not included). Ensure the mounting surface is sturdy enough to support the fixture.
Installation Steps:
- Power Disconnection: Before starting any installation, ensure the power supply to the installation area is turned OFF at the circuit breaker or fuse box.
- Mounting Bracket Installation: Attach the provided mounting bracket securely to the desired surface (wall or pole arm) using the appropriate screws and anchors from the installation kit. Ensure the bracket is level and firmly fixed.
- Wiring Connection:
- Connect the black wire from the fixture to the live/hot wire from the power supply.
- Connect the white wire from the fixture to the neutral wire from the power supply.
- Connect the green wire from the fixture to the ground wire from the power supply.
- Secure all connections with the provided wire nuts and ensure they are tightly sealed.
- Fixture Attachment: Secure the LED barn light fixture to the installed mounting bracket. Ensure all screws are tightened to prevent movement.
- Power Restoration: Once the installation is complete and all connections are secure, restore power at the circuit breaker.
Video 1: A demonstration of the installation process for the SZGMJIA LED Barn Light, showing how to mount the bracket and connect the wiring.

Figure 2: Detailed diagram illustrating the dimensions of the barn light and the standard wiring connections (Yellow-green for Ground, Black for Live, White for Neutral).
Operating Instructions
The SZGMJIA 120W LED Barn Light is equipped with a built-in dusk-to-dawn photocell sensor for automated operation, eliminating the need for manual switching.
- Automatic On/Off: The photocell sensor detects ambient light levels. The fixture will automatically turn ON at sundown or when it gets dark, and turn OFF at sunrise or when sufficient daylight is present.
- Placement: Ensure the photocell sensor is not obstructed by objects or exposed to artificial light sources (e.g., other lights, streetlights) that could interfere with its proper function.

Figure 3: Close-up view of the dusk-to-dawn photocell sensor, which enables automatic light activation and deactivation based on ambient light.
Maintenance
The SZGMJIA 120W LED Barn Light is designed for minimal maintenance due to its durable construction and long-lasting LED technology.
- Cleaning: Periodically clean the exterior of the fixture with a soft, damp cloth to remove dirt and debris. Do not use abrasive cleaners or solvents.
- Inspection: Regularly inspect the fixture and wiring for any signs of damage, wear, or loose connections. Address any issues promptly to ensure safe operation.
- Lifespan: The LED light source has an ultra-long lifespan of over 50,000 hours, significantly reducing the frequency of re-lamping.
- Weather Resistance: The die-casting aluminum lamp body and IP65 waterproof protection ensure excellent corrosion resistance and heat dissipation, allowing the fixture to operate reliably in a wide temperature range (-4°F to 104°F).

Figure 4: Image highlighting the weather-resistant features of the barn light, including its IP65 waterproof rating and durable aluminum housing.
Troubleshooting
If your SZGMJIA 120W LED Barn Light is not functioning as expected, refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn ON at night. |
|
|
| Light stays ON during the day. |
|
|
| Light flickers or is dim. |
|
|
Specifications
| Feature | Detail |
|---|---|
| Brand | SZGMJIA |
| Model Number | B0816HXLY8 |
| Wattage | 120 Watts |
| Brightness | 18000 Lumens |
| Color Temperature | 5000K Daylight (Cool White) |
| Voltage | AC120-277V |
| Material | Die-casting Aluminum, Plastic |
| Water Resistance Level | IP65 Waterproof |
| Special Feature | Dusk to Dawn Photocell, Outdoor Security Lighting |
| Average Life | 50,000 Hours |
| Product Dimensions | 14.7"L x 9.9"W x 5.9"H |
| Item Weight | 4.93 pounds |
| Installation Type | Wall Mount, Pole Mount |
Warranty and Support
The SZGMJIA 120W LED Barn Light is built for long-term performance. While specific warranty details are not provided in this manual, the product is designed with a 50,000-hour lifespan, ensuring years of reliable operation under normal conditions.
For technical assistance, troubleshooting beyond this guide, or inquiries regarding product replacement, please contact SZGMJIA customer support through your original point of purchase or visit the official SZGMJIA store online.
Note: Keep your purchase receipt or order number handy when contacting support.