The board shown above includes a 3.3V 1A LDO, a genuine FT230x USB to UART adapter, a button to make the ESP8266 jump into its bootloader mode and a header where you can find all the soldered-on ...

This board is a very well executed ESP8266 mains relay, with an on-board mains power supply and power monitoring.

Following on from the announcement by Arduino that the new Arduino Create web based IDE is progressing as planned and is now available as hourly builds.