RS-232/422/485 To Fiber Converter, WDM-B Tx:1550nm/Rx:1310nm MMF 2km , SC Connector

RS-232/422/485 To Fiber Converter, WDM-B Tx:1550nm/Rx:1310nm MMF 2km , SC Connector

Marsoni

M251S

$137.00

Get it in 3 business days with 1 day shipping. Friday, May 29

RS-232/422/485 To Fiber Converter, WDM-B Tx:1550nm/Rx:1310nm MMF 2km , SC ConnectorThe STF 300C WB M provides a fiber converter solution to extend RS 232 or RS 422 RS 485 transmission distance up to 2km over Multimode fiber (WDM). The converter is equipped with multiple interface circuits, for connection to RS 232, RS 423, or RS 422 485 (2 or 4 wire). The STF 300C WB20 secures data transmission over EMI resistant fiber at speeds up to 256kbps for RS 232 or up to 1024kbps for RS 422 485.

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Works Great, at first didn't believe all the reviews, I've bought 5 chainsaws from one season to the next. After each winter couldn't get them to start. Followed the instructions to flush and let sit for a few days. Every one started and ran great. Hands down, this is a remarkable product for cleaning out blocked fuel systems from sitting all winter would recommend it for all 2 cycle engines and use the stable blend for winter as well as anytime use to prevent fuel spoilage.

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Reviewed in the United States on March 12, 2026

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Wayland Efird

Lexington, US

★★★★★ 5

Efird, a great product

Size: 8 Fl Oz (Pack of 1)

Used this in a Troy Built Garden Tiller, the tiller would stall and hard to crank until we use the Sta Bil Fast Fix, tiller now runs great and does not stall.

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Reviewed in the United States on April 25, 2026

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Amazon Customer

Lake Worth, US

★★★★★ 5

Worked great, saved me hundreds.

Size: 8 Fl Oz (Pack of 1)

I've had issues with the carburetor on my 2003 Honda ATV for years. It has needed cleaned regularly to stay running, and one repair shop wanted over $400 to replace the carburetor. One treatment with STA-BIL and it's running smooth again. Very impressive.

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Reviewed in the United States on May 21, 2026

Verified Purchase

Chris Wildy

Whiting, US

★★★★★ 4

Great for 2 cycle, meh for 4 cycle.

Size: 8 Fl Oz (Pack of 1)

This stuff is flat out amazing for 2 cycle small engines, works like advertised. 4 cycle isn't as good, if your engine hasn't ran in years, you'll still have to clean the carb, but it does help some. The 2 cycle oil for one is a lubricant and inhibits varnish buildup (especially a synthetic premium brand), and usually premium oil has a fuel stabilizer in it. Plus if you don't have a float bowl, there's not enough fuel for phase separation. I also use it in my mix for my ultrasonic cleaner when cleaning carbs. Overall a very good product, but understand it's limitations in this modern age of ethanal fuel.

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Reviewed in the United States on April 12, 2026