30A ACS712 Current Sensor

30A ACS712 Current Sensor
The 30A ACS712 Current Sensor consists of a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field in which the Hall IC converts into a proportional voltage.
Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, etc.
Connection Diagram of Arduino Uno with Current Sensor :
Fig: Connection of ACS712 Current Sensor with Arduino UNO
Curve of relation between the DC input voltage and measuring current:
Fig: Output Voltage vs. Sensed Voltage
Package Includes:
1 x 30A ACS712 Current Sensor
Specifications
Sensitivity
66mV/A
Measure Current Range
30A
Supply Voltage
4.5V~5.5V DC
Dimensions 
3 x 2 x 1cms 
Weight 
5 grams