DC 5V 7V-80V 30A ESP8266 WIFI 1/2/4 Kanal Relais ESP-12F Entwicklungsplatine
ab 7,71 €
Programming port: ESP8266's GND, RX, TX, 5V are respectively connected to the GND, TX, RX, 5V of the external TTL serial port module. IO0 needs to be connected to GND when downloading, and then disconnect the connection between IO0 and GND after the download is complete;.
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