1. Introduction
Thank you for choosing the OKPRO MSK-100 LED Barn Light. This high-performance outdoor lighting solution features a dusk-to-dawn photocell sensor, providing efficient and automatic illumination for various outdoor areas. This manual provides essential information for safe installation, operation, and maintenance of your new LED barn light.
2. Safety Information
- Always disconnect power before attempting any work on the unit.
- Installation must be performed by a qualified electrician in accordance with local electrical codes.
- Ensure the supply voltage (AC100-120V) matches the product's requirements.
- Do not connect this light to a dimmer switch.
- Avoid looking directly into the LED light source when operating to prevent eye injury.
- This product is designed for outdoor use and is IP65 waterproof. Ensure all connections are properly sealed to maintain water resistance.
- Do not modify the product in any way, as this will void the warranty and may pose a safety hazard.
3. Package Contents
Verify that all components are present before installation:
- LED Barn Light fixture (MSK-100)
- Mounting Arm/Bracket
- Mounting Hardware (screws, expansion plugs, wire nuts)
- Hex Wrench
- User Manual

4. Product Features
- High Brightness: 150W, 15000LM, 6500K Daylight for powerful illumination.
- Dusk-to-Dawn Sensor: Built-in photocell automatically turns the light ON at dusk and OFF at dawn.
- Wide-Angle Illumination: Provides 240° wide-angle lighting for optimal coverage.
- Durable Construction: Made with die-cast aluminum for excellent heat dissipation and IP65 waterproof rating.
- Energy Saving: LED technology offers significant energy savings compared to traditional lighting.
- Versatile Mounting: Supports both wall mount and pole mount installations.




5. Setup and Installation
The OKPRO LED Barn Light supports both wall mount and pole mount installations. Follow these steps carefully:
5.1. Attaching the Mounting Arm
- Align the teeth of the light fixture with the teeth on the mounting arm.
- Insert the provided screw and tighten it with the hex wrench to secure the light to the arm.
- Adjust the angle of the light as desired and ensure the screw is firmly tightened.
5.2. Wiring Instructions
The light comes with pre-stripped wires for easy connection:
- Live (L): Connect the brown wire to the live wire of your electrical supply.
- Neutral (N): Connect the blue wire to the neutral wire of your electrical supply.
- Ground (E): Connect the yellow/green wire to the ground wire of your electrical supply.
- Use the provided wire nuts to secure all connections.
5.3. Mounting the Fixture
Choose your preferred mounting method:
Wall Mount:
- Mark the desired screw positions on the wall using the mounting arm as a template.
- Drill pilot holes at the marked positions. Insert expansion plugs if mounting into masonry.
- Secure the mounting arm to the wall using the provided screws.
- Connect the electrical wires as per the wiring instructions.
Pole Mount:
- Remove the cover from the pole mounting bracket (pole not included).
- Fix the light pole to the bracket with screws.
- Connect the electrical wires as per the wiring instructions, routing them through the pole if applicable.

Video 1: This video demonstrates the installation process of a LAMGO barn light, including wiring and mounting steps.
Video 2: This video from Olafus shows the installation of a 170W LED barn light, highlighting wall and pole mounting options and the dusk-to-dawn feature.
6. Operating Instructions
The OKPRO LED Barn Light features an integrated dusk-to-dawn photocell sensor for automatic operation. No manual switching is required.
- The light will automatically turn ON when ambient light levels drop (at dusk).
- The light will automatically turn OFF when ambient light levels rise (at dawn).
- Ensure the photocell sensor is not obstructed by any objects to guarantee proper function.

Video 3: This video from OWLEYE-YSD demonstrates the dusk-to-dawn functionality of the LED barn light, showing it automatically turning on as it gets dark.
7. Maintenance
The OKPRO LED Barn Light requires minimal maintenance:
- Periodically clean the light fixture and photocell sensor with a soft, damp cloth to remove dirt and debris. Ensure power is disconnected before cleaning.
- Do not use abrasive cleaners or solvents, as they may damage the finish or components.
- Regularly inspect the wiring and mounting for any signs of wear or damage. Address any issues promptly.
8. Troubleshooting
If you encounter issues with your LED barn light, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on at dusk. | No power supply; obstructed photocell; faulty sensor. | Check power connections and circuit breaker. Ensure photocell is clear. Contact support if sensor is suspected faulty. |
| Light does not turn off at dawn. | Photocell obstructed; excessive ambient light; faulty sensor. | Ensure photocell is clear and not receiving artificial light. Contact support if sensor is suspected faulty. |
| Light flickers or dims. | Unstable power supply; loose wiring connection; product defect. | Check power stability and all wiring connections. If problem persists, contact support. |
9. Specifications
| Specification | Value |
|---|---|
| Model Number | MSK-100 |
| Power | 150W |
| Luminous Flux | 15000LM |
| Color Temperature | 6500K (Daylight) |
| Voltage | AC100-120V |
| Waterproof Rating | IP65 |
| Material | Die-cast Aluminum, Metal |
| Product Dimensions | 7.87 x 2.95 x 11.22 inches |
| Item Weight | 1.87 pounds |
10. Warranty and Support
For warranty information or technical support, please refer to the contact details provided on the product packaging or the official OKPRO website. Keep your purchase receipt for warranty claims.





