CH340G 4.5V-5.5V USB to ESP8266 ESP-01/01S Wireless Wifi Adapter Module
2,63 €
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. ESP-01 serial wifi module can be directly plugged into the yellow pin header without any connection wires.
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