Feature:

ESP8266-12F is an enhanced version of ESP8266-12. It has perfect peripheral circuits, four-layer board technology, enhanced impedance matching, and better signal output. Whether it is stability or anti-interference ability, the PCB antenna has been tested in a professional laboratory and is perfectly matched. After ROHS certification, all have been greatly improved! For users who chose ESP-12 before, it doesn't matter even if they have already made the product. The enhanced version is fully compatible with the previous firmware, and the pins are added six IO ports and SPI ports on the basis of ESP-12, making development more convenient and applications More extensive.