5pcs Esp 12S ESP12S Esp8266 Serial WiFi Module (upgrade 12) + Plate Expansion In The Port Series Wireless Remote Transceiver

ESP12S ESP8266 12 is an upgraded version of ESP8266 12S, improved peripheral circuit, four laminate plate process, improved impedance matching Compatible Fully compatible with romantic versions ESP 12E or ESP12F High Performance FCC & CE & RoHS approved; Low power consumption; More improved antenna design, better Signal performance High performance Signal output is better, whether stable or interference free, PCB antenna after professional laboratory testing, perfect matching, after ROHS certification High performance have been greatly improved! For users who have chosen ESP 12 before: Even if the product has not yet been produced, the improved version is fully compatible with the firmware before ESP 12, based on SPI and the new six IO port, mouth extraction, development is more convenient, more widely used!