ESP8266 WiFi MODULE ESP-12

ESP8266-12 is an enhanced version ESP8266-12, improve peripheral circuitry increases impedance matching, the signal output is better, whether it is stable or anti-jamming capability, have been greatly improved! For users before selecting the ESP-12, it does not matter even if the product has been made, enhanced version is fully compatible with previous firmware, the pin has added six IO ports on the basis of the ESP-12, SPI leads.