ESP8266 UNO Based Nodemcu Development Board

Based on ESP-8266EX.
Arduino compatible, using Arduino IDE to program.
Support OTA wireless upload.
Onboard 5V 1A Switching Power Supply (highest input voltage 24V).
The direct use of Arduino IDE development, the same operation with Arduino UNO.
Operating Voltage: 3.3V
Digital I/O Pins: 11
Analog Input Pins: 1