DC 5-80V Power Supply ESP8266 WIFI Relay Module ESP-12F Development Board
4,74 €
UART program download port: GND, RX, TX, 5V of ESP8266 are respectively connected to external TTL serial port module. 3.6X6MM button: ESP8266 reset button. Relay output. NC: Normally closed, the relay is short-connected with COM before it is closed, and it is suspended after being closed;.
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