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WORRY FREE GUARANTEE!
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With over 10,000 satisfied customers, Sima S. Enterprises offers the
finest quality industry proven USB, RS-232, RS-485, RS-422, TTL, Ethernet, and
Fiber Optic converters available. All of our products are
shipped the same day ordered and come with a 30 day satisfaction guarantee and a 5 year manufacturer's warranty.
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Frequently Asked Questions
GENERAL QUESTIONS
GENERAL RS-232 / RS-485 / RS-422 QUESTIONS
SERIAL CONVERTER QUESTIONS
OPTO-ISOLATION QUESTIONS
TROUBLESHOOTING QUESTIONS
FIBER OPTIC CONVERTER QUESTIONS
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