3Pcs ESP8266 ESP-01S Remote Serial Port WIFI Transceiver Wireless Module

Description: 1MB (8Mbit) Flash size. AP, STA, AP+STA modes available. Very simple AT commands, easy to use. Low-power consumption and small Internal LWIP interface. Only four pins interface, VCC-3V3, GND, TXD and RXD. AT commands firmware. New IC ESP8266ex This module just have small upgradation on ESP-01 PCB board Package included: 3 x ESP-01S Wireless Module