1Brand New ESP-12E Wifi Module. 2ESP8266-12E is an enhanced version ESP8266-12, improve peripheral circuitry increases impedance matching. 3The signal output is better, whether its stability or anti-jamming capability, have been greatly improved. 4This enhanced version is fully compatible with previous firmware. 5Added six IO ports on the basis of the ESP-12, for SPI leads. Features: 1. Brand New ESP-12E Wifi Module. 2. ESP8266-12E is an enhanced version ESP8266-12, improve peripheral circuitry increases impedance matching. 3. The signal output is better, whether its stability or anti-jamming capability, have been greatly improved. 4. This enhanced version is fully compatible with previous firmware. 5. Added six IO ports on the basis of the ESP-12, for SPI leads. Specifications: Model: ESP-12E ESP8266 ISM: 2.4GHZ PA: +25dBm 802.11 b/g/n Package List: 1 * Wifi Module