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Description: ✔Breakthrough design, there are new breakthroughs, based on ESP-12E.✔The new four-layer board design, the new revision antenna RF performance optimization, communication distance is increased by 30% -50% compared to ESP-12E!✔Semi-hole chip technology, the whole IO leads, with metal shielding shell.✔Built-board PCB antenna✔4M bytes Flash.✔Pins and footprint are fully Compatible with ESP-12E and our relevant breakout board.✔Most of the documentation can refer to ESP8266 page.Features: Type: ESP-12FStandards Certification: FCC / CE / TELECWireless standards: 802.11 b / g / nFrequency range: 2.4GHz-2.5GHz (2400M-2483.5M)Data interface: UART / HSPI / I2C / I2S / IR Remote Control GPIO / PWMOperating voltage: 3.0 ~ 3.6V (recommendation 3.3V)Working Current: Average: 80mAOperating temperature: -40 ° C~ 125° CPackage Included:2 X ESP-12F