ITEM NAME:ESP8266 ESP-12F Serial WIFI Module ESP-12E Upgrade Remote Wireless Board Product Description Description: Description: 1. ESP8266-12F is an enhanced version of ESP8266-12, perfect peripheral circuit, four layer board technology, enhance impedance matching, better signal output. 2. No matter stability or anti-interference ability, PCB antenna has been tested by professional laboratory, perfect matching, ROHS certification, and has been greatly improved. 3. For users who have previously selected esp-12, even if they have already made products, it doesn't matter. The enhanced version is fully compatible with the previous firmware. 4. Based on ESP-12, the pin is led out by six new IO ports and SPI ports, which makes the development more convenient and the application more extensive. Specification: Model: ESP-12F Standard certification: FCC/CE/TELEC Wireless standard: 802.11 b / g / n Frequency range: 2.4GHz-2.5GHz(2400M-2483.5M) Data interface: UART /HSPI / I2C / I2S / IR remote control GPIO / PWM Working voltage: 3.0-3.6v (3.3V recommended) Working current: average value: 80mA Working temperature: - 40 Â ° ~ 125 Â ° Size: 24mm * 15mm * 3mm/0.94*0.59*0.11'' Weight: 2g Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 X ESP8266 ESP-12F Serial WIFI Module.Included: 1 X ESP8266 ESP-12F Serial WIFI Module. ESP8266-12F is an enhanced version of ESP8266-12, perfect peripheral circuit, four layer board technology, enhance impedance matching, better signal output.