ESP8266 WIFI 4 Channel Relay Module ESP-12F 30A Development Board For Arduino U
14,34 €
WiFi module, all I/O ports are led out, and it supports DC7-28V/5V power. The I/O port and UART program download port of the WiFi module are all. On-board mature and stable ESP-12F WiFi module, large capacity 4M Byte Flash;.
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