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BL-50 : Slow Flashing Warning Beacon for Model Trains

This beacon is perfect for mimicking the look of large incandescent warning lights, bringing an authentic feel to your models.

The BL-50 is versatile and can be used in various settings, whether it’s on top of a model water tower, a miniature lighthouse, a radio/TV tower, or within an industrial scene. Its slow flash adds a captivating effect that enhances the overall look of your project.

Realistic Incandescent Action

The BL-50 uses advanced LED lighting to create a slow, gentle flashing effect, similar to incandescent warning lights not the instant on/off like majority of the other LED products.

Flashes at a rate of 20 times per minute, creating a steady, slow rhythm.

Easy to Use and Versatile

Despite its detailed effects, the BL-50 is simple to use. It’s compact and flexible, fitting easily into any setup. Whether you’re working on a detailed train layout or a complex diorama, the BL-50 blends in perfectly, enhancing the overall look without taking away from your work.

Endless Possibilities

The uses for the BL-50 are limited only by your imagination. Whether it’s adorning the top of a model water tower, a miniature lighthouse, a radio/TV tower, or adding intrigue to an industrial scene, the BL-50 can do it all. Its versatility is only matched by your creativity, making it perfect for a multitude of projects seeking that hypnotic slow flash of light.

What Makes the BL-50 Different?

The BL-50 stands out from other warning beacons on the market due to its attention to detail and user-friendly features:

  1. Realistic Flashing Effect:
    • The BL-50 replicates the slow, gentle flash of incandescent warning lights, creating a more authentic and visually appealing effect for your models.
  2. Advanced LED Technology:
    • Unlike many other products, the BL-50 uses advanced LED-based lighting for durability and longevity. The LED pulsates with a smooth turn-on and turn-off, closely mimicking the graceful glow of traditional incandescent lights.
  3. Versatile Applications:
    • The BL-50’s design allows it to be used in a variety of settings, such as on top of model water towers, lighthouses, radio/TV towers, or in industrial scenes. Its adaptability is limited only by your creativity.
  4. Measured Flash Rate:
    • With a flash rate of 20 times per minute, the BL-50 provides a consistent, slow, and steady flash that enhances the realism of your miniature world.
  5. DC Input Reverse Protection:
    • The BL-50 includes reverse protection for the DC input, ensuring that accidentally hooking up the power incorrectly won’t damage the device.
  6. Ease of Installation:
    • The LED attaches to the device with a plug connector, making it easy to route the wiring on your layout. Other Features such as screw terminal hookups make power connection straightforward. It also comes with a plastic holder for easy mounting.
  7. Customization Options:
    • The BL-50 offers a choice of 5mm, 3mm. Mini 805 LEDs in various colors (Red, Yellow, Warm White, or Cool White), allowing you to customize the beacon to suit your specific needs.
  8. Power Indicator:
    • A built-in power indicator lets you know when the beacon is active, taking the guesswork out of installation and operation.

These features collectively make the BL-50 a superior choice for model train enthusiasts who seek authenticity, reliability, and ease of use in their warning beacons.

What’s Included With The BL-50

  • Your choice of a 5mm, 3mm, or 805 mini in either Red, Yellow, Warm White, or Cool White.
  • Hookup guide with clear instructions
  • Plastic holder for easy mounting

Important Note: A power supply is not included with the BL-50. It requires DC power between 6-12 volts to operate and draws a maximum of 25mA when running. The screw terminals make it easy to connect to a power source.

Choosing the Right LED Size For Your Model Train Layout

When selecting the LED size for your BL_50, here are some recommendations to help you choose the best option:

  • 5mm and 3mm LEDs: These are great for lighting up larger areas, like the inside of buildings or the backside of a structure. They provide a good amount of light to make these spaces come alive.
  • 805 Mini LED: Thanks to its small size, this LED is perfect for simulating a person welding. It creates a realistic effect without taking up much space, making it ideal for integration into detailed scenes.

Video Example of The BL-50 in Action

BL-50 : Slow Flashing Warning Beacon Simulator Details


BL-50 Main Board, Mounting Holder, 5mm LED

LED Size Comparisons – Mini 805, 3mm, 5mm LEDs

BL-50 in Holder Ready for Mounting Under Layout


  • LED Based Lighting – Provides many years of service.
  • LED soft turn on and turn off – to simulate an incandescent light source.
  • Slow Flash rate of – 20 per minute.
  • DC Input reverse protected – Hooking power incorrectly will not damage the device.
  • Power Indicator – Know that the device is receiving power.
  • Screw Terminals Hookups – Provides easy hook up for power.
  • LED connector with 2mm plug for easy LED Install on Layout.
  • Your choice of a 5mm, 3mm 805 Mini LED in Red, Yellow, Warm White, or Cool White.
  • Comes with Plastic Holder – For Easy Mounting


The BL-50 requires DC power between 6 – 12 volts to operate. Draws max of 25ma when operating. Please note – power supply is not provided with BL-50.

{Includes – In The Box}

  • Your choice of 5mm, 3mm, or 805 mini in either Red, Yellow, Warm White, or Cool White.
  • Hookup Guide – Instructions.
  • Plastic Holder for easy mounting.


  • BL-50 Circuit Board Size : 75mm x 20mm
  • BL-50 Mounting Holder Size : 80mm x 48mm
  • Height when in holder : 25mm
  • 3mm and 5mm LED Wire Length : 8 inches
  • Mini 804 LED Wire Length : 19 Inches
  • LED Connector Plug Size 2mm.

{Download Instructions}

Buy The BL-50 Slow Flashing Warning Beacon Simulator