ESP8266 12V Wifi Relay Module Remote Control Switch APP Smart Home
6,20 €
On-board high performance microprocessor STM8S103 and ESP-01 WIFI module. The next entry mode 2 will automatically connect (about 20-60S to connect). Plug in the ESP--01 module, the module power, the light green light into slow flash, then press the S1 button to switch to the mode 2.
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