★★★★★ 5
Works as it should
Works as it should
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
USB To 4Ch Serial RS232 Converter
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
USB To 4Ch Serial RS232 ConverterUSB To 4Ch Serial RS232 Converter Industrial Isolated USB To 4 Ch RS232 Converter, USB To Serial Adapter, Original FT4232HL Chip, Mac Linux Android Windows Multi OS Compatible, Wall Mount Support Features: Adopts original FT4232HL chip, fast communicating, stable and reliable, better compatibility Supports USB to 4 ch isolated RS232, convenient for expanding multiple RS232 industrial serial devices Onboard unibody power supply isolation, provides
Quick Dispatch:
Your USB To 4Ch Serial RS232 Converter orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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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]
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4.2 ★★★★★
Based on 2284 reviews
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Product Reviews
★★★★★ 4
Four Stars
Just what I needed
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 14, 2016
★★★★★ 5
Functioned as advertized.
Installed these in my Whalers 96 200 Offshore. No issues, used permatex gasket compound on aluminum engine parts after cleaning with fine brass wire wheel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2024
★★★★★ 5
Fits 1988 Sea Ray V-135 2 stroke (Mercury)
For those of you with the 135 hp
mercury that was branded as the "Sea Ray 135" and paint matched to the boat (i.e. Seville's and some others) this is the 147 degree thermostat for that motor. My Seville is an '88 and It's difficult to cross reference the serial numbers on those motors when searching for parts. Only buy Quicksilver parts for these motors. Happy to find them on Amazon because Boats.net as an example, is not clear on what you're getting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 3, 2024
★★★★★ 5
fixed issue
stopped the overheat issue on my outboard!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 6, 2025
