ESP01S ESP8266 Wifi Module (New Version)

This is a wifi solution based on IC ESP8266 from Espressif, very price competitive wifi module, and also great function. Bring your project to the internet of things easily!

Update: new board turn to be color black, to support new firmware version 1.01, which require bigger flash size 1Mb, old one is 512Kb, also better signal anti interference capability.

Features:

• Very competitive price
• AP, STA, AP+STA modes available.
• Very simple AT commands, easy to use.
• internal LWIP interface.
• Only four pins interface, VCC-3V3, GND, TXD and RXD.
• Current firmware V091 for all stock, new reserved reset and CH_PD (for updating) pins available, you can refresh the firmware now.
• All using new ESP8266ex new chip, old chip is not available anymore.