SKU : B14007 Standard pin interface spacing do with Arduino Uno, Mega and so is fully compatible . (Unless the standard size arduino, such as Nano, Mini) Using advanced 3.3V power chip (with the official expansion board power chip CC3000 same), so that a 3.3V Arduino boards provide a more accurate , so ESP8266 as official cc3000 chip work as normal, there is no gap . It leads to a WiFi module power supply / service interfaces, enabling developers to easily extend the power supply and maintenance . Onboard ESP8266-12 type of industrial-grade stability WiFi serial module, using an enhanced PCB antenna, signal better . You can quickly switch DIP switch ESP8266-12 industrial grade WiFi stable operation mode (such as operating mode and upgrade mode) module, integrated serial chip, quickly flashing the firmware. Built-in 5V to 3.3V TTL level converter to prevent high-pressure Arduino TTL level of the WiFi module damage. (General module can not oh) Onboard ESP8266-12 stable industrial grade WiFi module has a metal shield, immunity to interference. In standard pitch leads to stable onboard ESP8266-12 industrial grade WiFi module all interfaces , enabling developers to easily develop deep. Site preparation ESP8266-12 provide industrial-grade stability WiFi module Arduino library, can be controlled by a very simple instruction, provide routine. 7 24 online QQ group, forums, e-mail technical guidance, sample programs, technical information sharing. Use stackable design , it can continue to accumulate above the other modules, easy to use. Onboard four LED displays the status of ESP8266, namely PWR, DFU, AP, STA, operation mode at a glance Datasheet ESP12E silahkan cek bbs*ai-thinker*com/forum*php?mod=attachment aid=OTAxfDI4YzA1MDAwfDE0NDc1NjcxNDR8MHw2NDE%3D