Upgrade version dari Wemos D1 -Perubahan Layout PIN -Compatible dengan Nodemcu -Onboard switching psu upto 24V DC in -Double hole untuk male header di sebelah female header. Based on the ESP-8266 for Arduino Compatible, you can use it on for Arduino IDE. -NodeMcu Compatible -11 Digital I/O pins -1 Analog Input pin -OTA -- Wireless Upload(Program) -On board switching power supply -- Max 24V input, 5V 1A outpu Programming: The D1 R2 has a micro USB for auto programming. Also you can programming it using OTA Warning: All IO is work at 3.3V.