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ESP-12F module combines the ESP8266 microcontroller with 4MB of flash and a PCB antenna.
The default firmware can add WIFI capability to another microcontroller, but it really shines when loaded with MicroPython, or NodeMCU.
Support 3 modes: AP, STA, AP + STA
Complete and self-contained Wi-Fi networking solution
The ESP-12F is an improved version of the 12E, improve the peripheral circuit, the four laminates plate process, enhanced impedance matching, signal output is better.