Hall Current Sensor Module ACS712 30A model

Desription : the current sensor chip ACS712ELC - 30; pin 5 v power supply, the onboard power light; plus or minus current can be measured, module, the corresponding analog output 185 mv/A; no current through testing, the output voltage is VCC / 2; the size of the PCB board: 31 (mm) x13 (mm);