20A range ACS712 module current sensor module Product Description1, current sensor chip: ACS712ELC-30A;2, pin 5V power supply, ... output 66mV / A;4, there is no the detection current through, the output voltage is VCC / 2;5, PCB ... avoid magnetic field impact this! NOTE:If you need large quantity, you could contact us. We may give you ... won't affect your use. 20A range ACS712 module current sensor module