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Train Control Systems KA2-C Keep Alive 1457

Marsoni M251S
Sale price$29.95
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Train Control Systems KA2-C Keep Alive 1457TCS 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 at half the size of a KA4, the KA2 will power HO or N scale locomotives with approx. 30% of the capacitance of KA3 KA4 devices (depending on the locomotive and motor). This Keep Alive includes a 2 Pin Quick Connector Harness with which to attach it to a decoder. Dimensions: 0. 35" x 0. 35" x
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  • We offer a 30-day return/exchange service after receiving.
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4.6 ★★★★★
Based on 2437 reviews
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Mandee
Belleville, US
★★★★★ 5
Thesgood quality for the price
Size: 500 Count (Pack of 1)
Love Amazon basics, good quality, great shape, no issues, real cotton, thickness is perfect.
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Reviewed in the United States on May 28, 2026
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Amanda
Cuba, US
★★★★★ 5
Excellent quality
Size: 500 Count (Pack of 1)
Another household staple. This are cheaper than the name brand but work just as good. Cotton is nice and thick, the stick holding it is sturdy.
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Reviewed in the United States on May 25, 2026
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AF
Battle Creek, US
★★★★★ 5
Just as good as top brands...
Size: 500 Count (Pack of 1)
Amazon does a great job with cotton products. Perfect thickness. Quality, value, household staple.
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Reviewed in the United States on May 17, 2026
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JeffersonD517
Battle Creek, US
★★★★★ 5
Cotton swabs
Size: 500 Count (Pack of 1)
Excellent cardboard stem that hold the cotton fluff secure and is environmentally friendly. No skin sensitivity. There is no scent making it great for those sensitive to odor or fragrance. The clean completely without the cotton falling apart. Excellent value.
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Reviewed in the United States on May 9, 2026
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Luis
New York, US
★★★★★ 4
Good Enough
Size: 500 Count (Pack of 1)
They are well built, with enough cotton on the tips. the stem is not as sturdy as the brand name, it does tend to bend with normal use, but it is well priced. Good product overall.
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Reviewed in the United States on May 18, 2026

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