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Good Craftsmanship: Adopted of high quality electronic components, and accuracy process, ensure for the durability. Passive Converter: The converter is passive and does not require an external power supply. Conversion: It converts single-ended PS-232 into balanced RS-485 differential and extends communication distance to 1.2 kilometre. Compatible: This converter is compatible with RS-232C and RS-485 standards Widely Used: Widely used in industrial automation, canteen sales systems, employee attendance management, highway toll stations, etc.