ESP-12E: ESP8266, WIFI Wireless Transceiver Module
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Description :
ESP-12 is a low power consumption of the UART-WiFi module, with very competitive price in the industry and ultra low power consumption technology, designed specifically for mobile devices and IOT applications, user's physical device can be connected to a WiFi wireless network, Internet or intranet communication and networking capabilities.
From 2015/12/28 on, all shippment will be "ESP-12E", It's enhanced version of ESP-12 and 100% compatiable with ESP-12.