The device 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 which the Hall IC converts into a proportional voltage.

1. The current sensor chips: ACS712ELC-05B;
2. Pin 5V power supply, on-board power indicator;
3. The module can be measured plus or minus 5 amps, corresponding to the analog output of 185 mV / A;
4. There is no the detection current through, the output voltage is VCC / 2;
5. PCB board size: 31 (mm) x13 (mm);

Note: ACS712 Hall detection principle, when you use to avoid magnetic field impact this!