Easy to use without any ESP8266 configuration knowledge. 10 support PWM / interrupt / serial / I2C scalable GPIO Compatible with UNO R3 configuration, calling syntax. Custom firmware can be updated via uno R3 update board. No USB to TTL converter required. One-click access to the brush-on mode without any wiring.
It is a W5500 ethernet with an RJ45 adapter. The W5500 from Wiznet does the TCP/IP Protocol and simplifies the output for the end user with the given male header pins.