USB to ESP8266 ESP-01S Serial Wireless Wifi Adapter Module Wi-Fi CH340G USB to TTL driver IC onboard, 115200 Baud Rate. USB to ESP8266 ESP-01 Wireless Wifi Adapter Module Wi-Fi CH340G driver. USB to ESP-01 adapter module has CH340G USB to TTL driver IC onboard, so you can easily use your computer to do ESP-01 functional debugging.
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