ESP8266 Wireless WIFI 4 Channel Relay Module ESP-12F Wifi Development Board foR4
16,51 €
The GND, RX, TX, and 5V of ESP8266 are respectively connected to the GND, TX, RX, of the external TTL serial port module. 1 x ESP8266 4 Channel Relay Module. Onboard and stable ESP-12F WIFI module, capacity 4M FLASH.
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