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Why Buy From us
price for 1 x Master Board
signal controller / train detector / servo, sound effect board, flasher board, other device driver
Items Description
  • what can this Master board do?

    • control the block signal by the train automatically: it may control 2 aspects signal, 3 aspects signal or 4 aspects signal.
    • use it with a slave board ( sell separately ), they may stop and restart the train before the turnouts.
    • use it with a slave board ( sell separately ), they may stop and restart trains at the station; or use them as shuttle train controller.
    • use it with the crossing signal sound board ( sell separately ) and the flasher board (sell separately ), crossing gate servo ( sell separately ), trigger them automatically by trains.
    • turn on lights, point motors, tunnel lighting or other electrical device automatically by trains.

    • how they work:


    the master board detects trains by bouncing invisible Infra-Red (IR) light off the underside of the rolling stock, or install it on track side, detecting the light reflected back. Once triggered by the train, the module runs built-programs. ( black surface will absorb most IR light, you may stick white tape under the train or use track side sensors )


    one sensor is enough to detect if the long train clear the sensor or not.


    1, to simulate the operation of 2-, 3- or 4-aspect signals.


    signals normally show green.  When the train passes the detector, the signal switches to red and keep red.  Once the train has fully cleared the detector, the module switches the signal back to green (via delay red, yellow and double yellow if appropriate).


    2, stop and restart train before the turnouts.


    When the train passes the detector, the signal switches to red and keep red, the slave board will cut off power to the near tracks so that no train can get through the near tracks,  Once the train has fully cleared the detector, the module switches the signal back to green (via delay red, yellow and double yellow if appropriate), and slave board power the near tracks again so that the near train can restart.


    3, stop the train and restart it at station or let the train run back.


    When the train trigger the detector, the slave board will cut off the power to the tracks and stop the train, after the set time, it will power the tracks again and the train will restart. Or run to another direction under shuttle mode.


    4, trigger the crossing signals’ sound effect board, flasher board, gate servo or other devices


    When the train passes the detector, the master board provide power to the sound board/flasher board, the servo rotate to pull off the arms for corssing gate after the warning sound,  Once the train has fully cleared the detector, it cut off the power to them, the servo rotate reversing so that the arm return up, work for both directions.

    Package included:

    • 1 master board  
    • 1 pre-wired IR sensor
    • 1 power connecting wire
    • no paper instruction, please come back to this listing to view the on-line instruction from the bottom of this page




you may still need the following accessories ( click the photos to buy ) :




                      1 x US standard Transformer 12V DC Adaptor Power Supply for HO N street Lights
1 x prewired 1 meter IR sensor train detector for signal controller master board     1 x TRANSFORMER POWER CORD & PLUG for DC socket pure copper 5.5mm x 2.5mm 22AWG   1 x prewired IR sensors train detector for block signal controller master board     

                              1 x trackside IR sensors train detector for block signal controller master board        1 x trackside enhenced IR sensors train detector block signal controller trigger
1 x model railway automatic spur rail station stop shuttle module slave board


1 x extending wire 1m with connector Master Board signal controller IR sensor    1 x one join two IR sensor split wire with connector for block signal controller  1 x one join two IR sensor split wire with connector for block signal controller


1 x one join two IR sensor split wire with connector for block signal controller
1 x one join two IR sensor split wire connector 1m for block signal controller    




goods will be shipped by Airmail from China after cleared payment, normally we may dispatch them within 24 hours, but sometimes, we need time to hand make them, in such case, we will dispatch them within 3 to 5 working days, ship to worldwide.

Approximate Delivery Time

Delivery Time Countries
8 - 12 working Days
10 - 15 working Days
15 - 25 working Days
United States
UK, australia, Canada, europe
other countrys

Full Instruction:
We accept payments by Paypal only. Payment should be made within 7 days.
free returns within 30 days: you may return the items(s) if you receive them defectived within 30 days at our shipping cost, we will send you replacements or money back. But please kindly inform us first before sending them back.
we've been specialized in Model Train Accessories since 2004, wholesale welcome.
We're glad to answer any questions you have. Please send us message through eBay and we will respond within 24 hours (weekend excluded).
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