Features

• the current sensor chip: ACS712ELC-20A
• pin 5V power supply, on-board power indicator
• the module can measure the positive and negative 20 amps, corresponding to the analog output 100mV / A
• is not detected by the current, the output voltage is VCC / 2
• PCB board size: 31mm x 13mm
• Weight: 0.18 oz (5 g)

• ACS712 Datasheet
• ACS712 Arduino Program
• Useful Introduction_1 from embedded-lab.
• Useful Introduction_2 from embedded-lab.