ROJECO Katzen-Wasserbrunnen-Wasserpumpe für 1,5 l transparente Haustier-Wasserbrunnen, Trinkspender, Ersatzpumpenzubehör

MAX3232 RS232 to TTL Serial Port Converter Module DB9 Connector MAX232 For Arduino

1~10PCS TTL Turn To RS485 Module 485 To Serial UART Level Mutual Conversion Hardware Automatic Flow Control Power Supply Module

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HL-340 HL340 New USB to RS232 COM Port Serial PDA FT232  9 pin DB9 Adapter support WIN11 Compatible CH340

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CH340N module CH340 Downloader USB-to-TTL download cable Single-chip microcomputer Serial port download