16 February 2017 User ReviewCheck your delivery options:
The 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. Low-noise analog signal path Device bandwidth is set via the new FILTER pin 5 µs output rise time in response to step input current This ACS721 current module is based on ACS712 sensor, which can accurately detect AC or DC current. The maximum AC or DC that can be detected can reach 20A, and the present current signal can be read via analog I / O port of Arduino.
Supply Voltage: 4.5V~5.5V DC Measure Current Range: -20A~ 20A Sensitivity: 100mV/A