Grove Electricity Sensor comes with a current transformator TA12-200 IC. This allows you to convert low AC currents from high AC currents. Addilionally, you can test this breakout with AC currents up to 5 A. It is possible to use tihs sensor for AC current measuring and device state observing applications too.
 
Features:

• Grove compatible interface
• Max. 5 A input signal
• High accuracy
• Small dimension

Technical Features (TA12-200):

• Product name: AC Current transformator
• Model number: TA12-200
• Ratio: 2000:1
• Input current: 0 - 5 A
• Output current: 0 - 2.5 mA
• Sample resistance: 800 Ohm
• Sample voltage: 2 V
• Nonlinear scale: <= % 0.2
• Phase shift: <= 5'
• Operating frequency: 20 Hz - 20 kHz
• Operating temperature: -55 °C --- +85 °C
• Dielectric endurance: 6 kV AC/1 dk

Documents:

• Click here for Arduino Starter Guide
• Click here for Information about Grove
• Click here for detailed information and Arduino Application from Wiki page.
• You can see this page for your questions about this product.