DC 7-28V 5V ESP8266 WiFi 4 Channel 30A Relay Module ESP-12F Development Board
17,36 €
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.
Jetzt bei Ebay:
