Most project of Arduino may need more than two voltage supply. When feed with from 4.5-35V, this arduino power shield able to provide a voltage range from 1.25-12V with 3A peak current. Ideal for servo control and other non-standard components. With this arduino power supply shield, your Arduino now have one power supply for all.

It has be build-in voltage measuring function which mapping the output voltage to Arduino analog pin 0. It can be controlled by Arduino digital Pin13 to switch on/off.

• Supply voltage:4.5-35V
• Output voltage:1.25-12V 
• Output current: 2A (3A peak)
• Max output power: 15W 3A@5V
• Efficiency:90%

• Wiki (arduino power supply shield)
• Schematics

• Power Shield    x1