The Grove Voltage Divider provides an interface to measure external voltages without the need to create a resistor ladder.  Voltage gain is adjustable using the onboard switch.

Features

• External Voltage Interface and Grove Interface
• Easy to use
• Adjustable gain

Specifications

• Working Voltage: (min) 4.7V, (typical) 5.0V, (max) 5.3V
• Measurement Accuracy:
• External Voltage Range:
  
  • (Position 3): (min) 0.3V, (max) 12.9V
  • (Position 10): (min) 1.0V, (max) 43V
• Dimensions: 24mm x 20mm

Please see the SeeedStudio wiki for more information.