ESP8266 ESP01S remote serial port wifi wireless module 3.3v spi for arduino B&X

ITEM NAME:ESP8266 ESP01S remote serial port wifi wireless module 3.3v spi for arduino B&X Description: Model:ESP01S Color:As Picture Voltage:3.3V SPI Flashï ¼Å¡1MB Size:2.4*1.5cm Package Included: 1pcs ESP01S remote serial port wifi wireless module.1pcs ESP01S remote serial port wifi wireless module. SPI Flashï ¼Å¡1MB. Color:As Picture. Size:2.4 1.5cm.