SKU: OT2008-C44 Article number: AB111 EAN: 4749592223638
An Arduino compatible D1 R2 board with an ESP8266 onboard.
Arduino UNO shields can also be used on this, provided they are compatible. Make sure to check this in advance.
The differences in the pins are as follows:
To use in the Arduino IDE, use the following settings:


See here for a detailed installation guide.
Dimensions
Length: 6.9cm
Width: 5.4cm
Height: 1.2cm