Arduino Sensor Shield V4.0 Digital Analog Module Expansion Development Board (UNO , MEGA2560)

Arduino Sensor Shield V4.0 allows you to connect to various modules like sensors, servos, relays, buttons, potentiometers.just plug & play! Each functional module has buckled port with VCC, GND and Output, which has corresponding port on the Sensor Shield, connected with a plain 2.54mm dual-female cable you may start playing already. Buckled brick cables are like cement for bricks, make the connections easier, secure and more professional looking.

Operating Voltage: 5VDC
Input Voltage (recommended): 7-12VDC
Input Voltage (limits):  6-20VDC
Buckled Analog Port:Handy, solid connection to 6 Analog inputs with VCC/GND
Digital IO port:13 ports prepared to digital modules or servos
Analog IO Port:2.54 grid male pin header connections
Buckled Communication Port:Selectable between I2C and UART

 https://arduino-info.wikispaces.com/SensorShield

Each port has 3 PINs to connect to:

From Arduino-Info:

Digital PINs 0 to 13:

These are available in the rows outlined with red. They connect to INPUT and OUTPUT devices – just like connecting directly to Arduino, but we also get GND and Vcc

Analog INPUT PINs A0 to A5

Those are outlined in Green with white labels.

Communications PORT

This connector can go to external devices, for more complex communications protocols to work with Arduino – GPS, Ethernet Interfaces, etc.. These are 4 PINs connectors. Is outlined in yellow.

Either SERIAL COMMUNICATIONS (COM) or “I squared C” (often written as I2C or IIC) are supported on this shield (V4.0). The two select jumper blocks shown above are moved to select one or the other.