Discription:
1. the current sensor chips: ACS712ELC-20A;
2. pin 5V power supply, on-board power indicator;
3. the module can measure positive and negative 20 amps, analog output 100mV / A;
4. when no current is detected by the output voltage is VCC / 2;
5. PCB board size: 31 (mm) x13 (mm);