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With Blue and a Black w/ White Stripe wire to attach it to a decoder.


TCS Keep-Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work.


Newly-redesigned and coming in at half the size of a KA3, the KA1 will power HO or N scale locomotives with approximately one-third of the capacitance of KA3/KA4 devices (depending on the locomotive and motor).


Dimensions: 27mm x 8.9mm x 6.2mm

Scale: HO Scale N Scale

Input Rating: 12 to 16V

TCS KA1 Keep Alive®

SKU: TCS-1454
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