ITEM NAME:ESP8266 ESP-12E ESP-12F Wireless Transceiver Adapter Module 3.3V Regulator Gw.Not included ESP8266 Module. test the module.When you want to use the adapter board with the 3.3v regulator and apply 5v to the board, you also need to. Secondly, Solder the 3.3V regulator to the bottom of the adapter board.
