UNO Shield Nano Shield for NANO 3.0 and UNO R3
*AREF output:3.3V output
*Expand all digital IO:6 PWM Pin
*Function: expand all digital IO
*Main features:I2C expansion Pin
*Function: expand all digital IO
*Main features:I2C expansion Pin
*Design specially for Nano
*Expand DC power interface for NANO USB interface
*Weight:25g
*Pack size :10cm*10cm*10cm