The OTA WeMos D1 CH340 WiFi Development Board ESP8266 ESP-12E is a more Powerful Arduino with WIFI support.This development platform Espressif based on the ESP-8266 is the pins of the Arduino Uno almost compatible and can even be used as some shield modules designed for the classic Arduino Uno.
Features:

1- Integrated 5V 1A switching power supply (maximum voltage 24V)
2- Based on ESP-8266EX
3- Arduino compatible, using IDE Arduino to program
4- 11 x I/O x pin
5- 1 x ADC x pin (input range 0-3.3V)
6 - Support OTA wireless upload
7-Parameters:CPU 80 Mhz,Speed of 115200
8- You need setup CH340G(USB to UART IC) driver,if you first use it.