ESP-12F Development Board ESP8266 Wifi 4 channel 5V 30A Smart Relay Module NEW
15,46 €
GND, Rx, TX and 5V of esp8266 record and write port are respectively connected with GND, TX, RX and 5V of external TTL serial port module. Mature and stable esp-12f WiFi module on board, large capacity 4m Byte Flash.
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