ESP8266-12F is an improved version of ESP8266-12, peripheral circuits, four-layer board technology, improved impedance matching, signal output is better, whether it is stability or anti-interference ability, PCB antenna through laboratory testing, perfect matching. For users who choose ESP-12, it doesn't matter if the product has been manufactured, the improved version is fully compatible with previous firmware, the pin has added ESP-12 on the basis of six IO ports, SPI mouth leads, developing more conveniently, application more extensive. Condition: New Type: WIFI Wireless Module Model Number: MW Application: Computer Color: Photo Color Material: Plastic + Metal Package Contents: 10 x WIFI Wireless Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.