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$3.89
ATK-ESP8266
ESP8266 development board serial port to WIFI module
ESP32-S3-Zero-Basic-Kit
ESP32-S3/C6/C3 Zero Starter Learning Kit Diy School Kit Arduino /MicroPython /ESP-IDF
JQ8400
USB Voice module JQ8400 FL Serial port control copy synthesis module music IC chip voice prompter
USB TO RS232/485 (B)
Industrial Grade Isolated USB TO RS232/485 (B) Serial UART Converter FT232RNL For Wall/Rail-Mount