IB039 ตัวแปลง USB To RS232 RS485 Converter CH340 Isolated Industrial Grade USB to RS232 RS485 Communication Module 5V...
IB039 ตัวแปลง USB To RS232 RS485 Converter CH340 Isolated Industrial Grade USB to RS232 RS485 Communication Module 5V Serial Port Line Converter TVS Protection USB-RS232 RS485