A current sensing module based on the Allegro ACS712 Hall effect sensor, capable of accurately measuring both AC and DC current up to ±20 A. The module outputs a proportional analogue voltage that can be read directly by an Arduino or other microcontroller via an analogue input pin.

Key Features

• Sensor – Allegro ACS712 Hall effect current sensor
• Current Range – ±20 A (AC or DC)
• Sensitivity – 100 mV/A
• Supply Voltage – 4.5–5.5 V DC
• Output – Proportional analogue voltage, readable by Arduino analogue pins
• Bidirectional – Measures current in both directions

Ideal For

• Overcurrent protection circuits
• Battery charger monitoring
• Digital watt meters
• Switching mode power supply monitoring
• Programmable current sources

Also Available

• ACS712 Current Sensor – 5 A
• ACS711EX Current Sensor – ±31 A

Package Contents

• 1× ACS712 Current Sensor Module (20 A)