ESP8266 NodeMCU Generic Switch web UI overview (with port configuration)
У вашего броузера проблема в совместимости с HTML5
An overview of the Generic Switch web UI (based on ESP 8266 NodeMCU). Includes an example of configuring Arduino PWM Port to appear in "Control" page of the UI.
The software providing web interface ( https://github.com/dev-lab/esp-iot-generic-switch ) runs on "IoT Power Strip" hardware described here: http://www.thingiverse.com/thing:1211810 .