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			SIGM20: Stop train at Red Signal or SPAD		</h2>
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<p style="text-align: justify;">(That isn't as blunt an instrument as it sounds. If the relay is activiated, it can switch +12v DC to the track after the signal. If the train decoders are programmed for "brake on DC" then the train will come to a smooth stop.)</p>
<p style="text-align: justify;">To use this function, a DTX8B add-on board will be needed. The outputs of that board, instead of driving additional signal masts, will control one relay for each of the 8 signals driven by the board. The board can't directly drive the relay coil: an additional driver will be needed. We supply the RLY2: a dual pole relay with transistor driver assembled onto a circuit board.</p>
<p style="text-align: justify;"><strong><a href="/images/products/sigm20/stopping_trains_at_red_signals.pdf" target="_blank">This document gives a circuit diagram.</a></strong></p>
<p style="text-align: justify;">Note: The circuit diagram and information in the attached PDF shows "CML Electronics Limited". This should now be read as "Sig-naTrak® by GFB Designs" at the address details on our <a href="/contact-us">Contact Us</a> page.</p>
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