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Train Control Systems KA2-P Keep Alive 2003

Marsoni M251S
Sale price$26.95
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Train Control Systems KA2-P Keep Alive 2003TCS 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 KA4, the KA2 will power HO or N scale locomotives with approximately one third of the capacitance of KA3 KA4 devices (depending on the locomotive and motor). This Keep Alive includes a 2 Pin Quick Connector Harness for plugging into decoders with a
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.8 ★★★★★
Based on 1003 reviews
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Angela C
Birmingham, US
★★★★★ 5
My teeth look 20 years younger!
Wow, this is the first toothpaste that has actually worked in whitening my teeth. For reference, they were mildly yellow, I'm a daily coffee with creamer drinker. I feel like this toothpaste has taken the color of my teeth back to how they were in my 20s. I like the fresh taste and smooth texture. The tube is smaller than regular toothpaste, but I believe in quality over quantity. I'd rather pay a little more for a quality product with better end results!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
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Verified Purchase
Patty
Belleville, US
★★★★★ 5
You need to read this....A+ stuff!
Ok, I have to give my honest opinion here.... I had (yes past tense) two teeth that had small stains on them and the last time I had my teeth cleaned at my Dentists office he stated he could not remove the stains... So, I read the reviews on this toothpaste, did some more research on Google and got it today. After lunch, I brushed my teeth and looked and the stains and they seemed to look lighter. I thought hummm.? Really? Then after dinner, I brushed my teeth again and just looked into the mirror out of curiosity (been a few hours) and I don't see either stain at all ... completely GONE! I am being very honest and so surprised that both stains were gone... Yeah, I know what you're thinking when you are reading this...B.S. right? Well, I am so surprised myself that I ordered two more tubes since they're on sale and I plan on giving one of them to a friend that has some coffee stains on her teeth and see if it works for her too... So, I would have to say that by purchasing the two tubes that I did, was way cheaper than going to my Dentist that stated they couldn't get rid of the stains. I'm totally 100% impressed with this Crest 3D White .. my new go toooooo forever! P.S. I am a ice tea drinker by heart and sometimes coffee too. Signed: So impressed by this stuff and it actually taste good and made my mouth feel fresh and my breath was fresh for a long time too....A+++++ toothpaste! Quick Shipping as well.....
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Reviewed in the United States on May 29, 2026
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Verified Purchase
Anna Michelle
Birmingham, US
★★★★★ 5
Beautiful white teeth
This works great. I always keep my teeth, nice and clean and bright and white and usually I have to buy Dental whitening, but this is the first time I found a product that you can just brush your teeth a few times a week and it keeps your teeth, nice and white.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
S
Verified Purchase
Scientific Baking
Belleville, US
★★★★★ 4
Refreshing toothpaste that helps to deep clean your teeth.
Good tasting toothpaste that cleans my teeth well. It seems to have a tiny bit of grit to it to help remove stains on your teeth. The tube is quite small. So, you do not get a lot of toothpaste. But a little goes a long way. I think that it did make my teeth a bit whiter. I did not have any sensitivity to it at all.
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Reviewed in the United States on May 26, 2026
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Verified Purchase
Dave
Fort Morgan, US
★★★★★ 5
Works!
This is an updated review changed from 4 stars to 5 stars after using it for a week. This toothpaste actually removed Matcha Green Tea stains that were between my teeth and other tight areas my hygienist couldn't get into. I'd say this is a product for stubborn stains and I wouldn't use it more than maybe a week at a time because it's expensive for the small size you get and I'm not entirely sure what the long term effect is on the teeth.
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Reviewed in the United States on May 24, 2026

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