★★★★★ 5
It seals and keeps things dry
Size: 24 x 35mm
It’s a plastic bag what do you want me to review?
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Reviewed in the United States on March 6, 2026
Train Control Systems KA1 Keep Alive 1454
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Train Control Systems KA1 Keep Alive 1454TCS 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). This Keep Alive includes a Blue and a Black w White Stripe wire to attach it to a decoder.
Quick Dispatch:
Your Train Control Systems KA1 Keep Alive 1454 orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Train Control Systems KA1 Keep Alive 1454 ships.
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Based on 439 reviews
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Product Reviews
★★★★★ 4
I used scissors to separate the patches used.
Size: 24 x 35mm
yep, amazing a patch that holds back air.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2026
★★★★★ 1
Not what ad picture promotes - just patches - no more
Size: 24 x 35mm
For twice amount of money that other tire kit repair offer - it has no glue, no lighter fluid, no scratch tool - just top $ for patches. Show in video how to fix, but after you get it you'll find that you need to go back online and order, glue, lighter fluid, scratch pad, and perhaps even a roller tool. Just order a kit with needed accessories & patches to start with at half the price.
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Reviewed in the United States on December 5, 2024
★★★★★ 5
Rectangle shape covers & adheres well.
Size: 24 x 35mm
This is a rectangle shaped patch that I prefer over circular patches. Covers well and gives new life to inner tubes on the used bicycles I repair to give to charities.
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Reviewed in the United States on November 18, 2025
★★★★★ 3
Just the patch, nothing else
Size: 24 x 35mm, Size: 24 x 35mm
Tried this with cement glue for PVC piping. Not sure if they are a different type of glue. The patch didn't stick at all. The instruction says to use lighter fluid, which I didn't have. Very inconvenient to need all sort of stuff to just patch a few dollar tube. I was hoping a simple process of removing the cover and sticking it on the tube. Several hours of waisted time.
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Reviewed in the United States on July 16, 2023
