Train Control Systems / B-MB7 (SCALE=HO) Part # 745-1634
This motherboard is designed to replace the original lighting board in Bachmann steam engines including the K4 steam. Included on this motherboard is a KA3 Keep Alive® for smooth operation over troublesome tracks. Pair with a WOW121 for unparalleled sound and interruption-free performance.
NOTE: this product does not function without a decoder. Pick up an EU621 or WOW121 decoder to use this product.
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