Open gretel opened 6 years ago
available at https://www.ebay.de/itm/ESP8266-5V-Wifi-Relais-Modul-APP-Control-Board-fur-Smart-Home-Automation-TE798/391892413966 for around 9 euro.
Do you know what GPIO is connected to the relay (must be GPIO0 or GPIO2). There is an LED on board but I guess it's in the same line as the relay or maybe it's a power-on LED.
available at https://www.ebay.de/itm/ESP8266-5V-Wifi-Relais-Modul-APP-Control-Board-fur-Smart-Home-Automation-TE798/391892413966 for around 9 euro.