ACS712 Current Sensor Module 20A

The ACS712 20A Current Sensor Module is a compact and highly accurate current sensing solution designed for measuring both AC and DC electrical currents in electronic systems. The module is based on the reliable ACS712ELC-20A Hall-effect sensor chip , which provides isolated and non-intrusive current detection with excellent linearity and stability. The sensor works by detecting the magnetic field generated by current flow through its integrated copper conduction path. It produces an analog voltage output that changes linearly according to the measured current. The output signal can be directly connected to analog input pins of Arduino, ESP32, Raspberry Pi ADC modules, and other microcontrollers for monitoring and control applications. Operating from a 5V DC power supply , the module measures currents ranging from -20A to +20A with a sensitivity of approximately 100mV per ampere . When no current is flowing, the output voltage remains at approximately VCC/2 . The board includes thick copper traces capable of handling high current loads and surviving temporary overcurrent conditions. It also features low noise output, minimal magnetic hysteresis, and factory-calibrated accuracy for dependable measurements. Note: Although the ACS712 chip supports high electrical isolation internally, the breakout PCB itself is not designed for direct high-voltage isolation applications. Specifications Product Type: Current Sensor Module Sensor Chip: ACS712ELC-20A Current Measurement Range: -20A to +20A Measurement Type: AC and DC Current Operating Voltage: 5V DC Output Type: Analog Voltage Output Sensitivity: 100mV/A Zero Current Output Voltage: VCC / 2 Detection Principle: Hall Effect Output Characteristics: Linear Isolation Type: Hall-effect electrical isolation Board Material: PCB + Metal Board Color: Blue Features Included: Power Indicator LED Applications AC and DC current monitoring Arduino current measurement projects Battery monitoring systems Power consumption analysis Motor current sensing Overcurrent protection systems Solar energy monitoring Smart power management systems Industrial automation projects Electronic laboratory testing