WitMotion USB to RS485 Modbus RTU UART Converter Cable with CH340 Chip Enclosed by 4 Way Female Head Serial Adapter (1m, Black) Windows 10,8,7, Linux MAC OS : Amazon.de: Computer & Accessories
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PZEM 017 DC Communication Box RS485 interface Modbus 0 300V 300A Shunt USB Cable|Energy Meters| - AliExpress