ESP8266 ESP-01S DC5-80V WIFI Relay Module Remote Switch Development Board Kit
4,85 €
ESP8266 ESP-12F. 3.6X6MM button: ESP8266 reset button. UART program download port: GND, RX, TX, 5V of ESP8266 are respectively connected to external TTL serial port module. Relay Module. 9 Relay indicator LED: lights up when closed.
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