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CH340B USB to RS485 RS422 Serial Communication Module Converter Adapter Cable
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  • $113.99 
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USB 4-Port Serial Adapter/USB 2.0 Quad Port Serial DB-9 RS-232
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  • $225.99 
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USB 2.0 to RS485 DB9 Serial Converter Adapter PL2303 chipest Cable
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  • $140.99 
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Coolgear Industrial USB 2.0 to RS-232 Serial Adapter Optical Isolation
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  • $140.99 
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CH340 USB to 4Pin Du-pont RS485 Serial Adapter Converter Terminal Block
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  • $90.99 
  • Free Shipping