20A range ACS712 module current sensor module Product Description1, current sensor chip: ACS712ELC-30A;2, pin 5V power supply, on-board power indicator;3, the module can be measured plus or minus 30 amps, corresponding to the analog output 66mV / 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, ...