Defines a 37-pin connector for RS-422 and RS-423 circuits.
"RS-449." YourDictionary, n.d. Web. 16 November 2018. <https://www.yourdictionary.com/rs-449>.
RS-449. (n.d.). Retrieved November 16th, 2018, from https://www.yourdictionary.com/rs-449
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