RS232-CONVERTERS.COM SERIAL AND USB CONVERTER PRODUCTS SIMA S. ENTERPRISES   1-877-647-7434 SERIAL RS232, RS485, RS422, AND TTL CONVERTERS - USB ADAPTERS  GENDER CHANGERS - FIBER OPTIC CONVERTERS - ETHERNET CONVERTERS

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WORRY FREE GUARANTEE! 30 Day Money Back! • 5 Year Warranty! • Free Shipping! • Same Day Express Shipping! • Industry Proven Highest Quality Products!

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. FREE WORLDWIDE SHIPPING ON ALL PRODUCTS OPTIONAL SAME DAY EXPRESS SHIPPING UNTIL 7:30 PM EST PRODUCT INVENTORY STATUS:   ALL PRODUCTS IN STOCK

Frequently Asked Questions

Question 10:  WHAT ARE HANDSHAKE LINES?

Answer:  Handshake Lines are used to control the direction of data flow between DTE and DCE. They are: RTS (Request to Send) - Asserted by DTE to prepare DCE to receive data. CTS (Clear to Send) - RTS Acknowledgment by DCE to allow DTE to transmit.  DTR (Data Terminal Ready) - Asserted by DTE to indicate that it is ready to be connected.  DSR (Data Set Ready) - Indicates an active connection by DCE. DCD (Data Carrier Ready) - Used by modem when a connection has been established with remote equipment. RI (Ring Indicator) - Used by the modem to indicate a ring signal from telephone line.

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