The NUM board is designed as a proto-shield matrix PCB for Arduino Nano, Arduino Uno or Arduino Mega. It is a double sided Matrix PCB with headers following the Arduino layout.
Thickness is 1.6mm .
It has a standard port for DC power jack , 5.5×2.1mm ,
**PCB color may vary **
These Arduino headers have the adjacent pads connected to facilitate soldering.
Option A: Board Only
Option B: Board + 3 male headers and 1 female header