WiFi Relays TX Rx GMD Serial Port Debugging Pins Relay Module WiFi Relay Module
ab 5,13 €
TX, Rx, GMD: Serial port debugging pins. The RX, TX, and GND pins of the USB to TL module are respectively connected to the TX, RX, and GND pins on the module (the default baud rate of the ESP8266 module is generally 115200 or 9600. ).
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