BDD ACS712 20A Current Sensor Module DC AC Current Measurement Board

The BDD Current Sensor Module 20A is a compact and reliable current measurement solution based on the popular ACS712ELCTR Hall-Effect Current Sensor IC. Designed for accurate AC and DC current monitoring, this module enables microcontrollers, development boards, and embedded systems to safely measure electrical current without direct electrical contact with the sensing circuitry.

Utilizing Hall-effect sensing technology, the ACS712 provides electrical isolation between the measured current path and the low-voltage control electronics. This makes the module ideal for power monitoring, battery management systems, motor control applications, energy measurement projects, power supplies, and industrial automation systems.

The module supports current measurements from 0A to 20A, making it suitable for a wide range of low- and medium-power electronic applications. At zero current, the analog output voltage is centered at approximately VCC/2, allowing microcontrollers to accurately detect both positive and negative current flow when used in bidirectional current sensing applications.

Its compact PCB design features integrated screw terminals for secure wire connections and standard 2.54mm header spacing for easy integration with Arduino, Raspberry Pi, ESP32, STM32, PIC, and other development platforms. The onboard circuitry provides a simple analog voltage output that can be read directly by an ADC input on a microcontroller.

The ACS712 sensor offers low internal conductor resistance, minimizing power loss and heat generation while maintaining accurate current measurements. This makes the module particularly suitable for continuous monitoring applications where efficiency and reliability are critical.

Whether used for battery-powered systems, renewable energy projects, motor current monitoring, robotics, or educational electronics, the BDD ACS712 Current Sensor Module provides a convenient and cost-effective solution for real-time current measurement.

Key Features

Part Number: BDD Current Sensor Module 20A

Based on ACS712ELCTR Hall-effect sensor

Measures both AC and DC current

Current sensing range up to 20A

Electrically isolated sensing technology

Analog voltage output

Supports bidirectional current measurement

Compact PCB design

Integrated screw terminal connections

Standard 2.54mm interface spacing

Low power loss through sensing conductor

Suitable for microcontroller integration

Easy installation and operation

Reliable and accurate current monitoring

Applications

Current monitoring systems

Battery management systems

Solar power projects

Power supply monitoring

Motor current measurement

Robotics and automation

Energy consumption monitoring

Electronic load testing

Arduino and Raspberry Pi projects

Industrial control systems

Educational electronics

Embedded system development

Technical Specifications

Model: BDD Current Sensor Module 20A

Sensor IC: ACS712ELCTR

Device Type: Current Sensor Module

Measurement Range: 0A to 20A

Current Type:

AC Current

DC Current

Output Type: Analog Voltage

Zero Current Output: VCC/2

Connection Type: Screw Terminals

Interface Header: 2.54mm Pitch

PCB Dimensions: 27.4mm × 11.8mm

Sensing Technology: Hall Effect

Isolation Type: Electrical Isolation via Hall Sensor

Benefits

Safely measures current without direct electrical connection

Suitable for both AC and DC circuits

Easy integration with microcontrollers

Compact and lightweight design

Reliable Hall-effect sensing technology

Low insertion loss and minimal heating

Secure screw-terminal wiring connections

Summary

The BDD ACS712 20A Current Sensor Module is a versatile Hall-effect current sensing solution designed for accurate measurement of AC and DC currents up to 20A. Featuring electrical isolation, analog voltage output, compact dimensions, and easy integration with microcontroller platforms, it is an ideal choice for power monitoring, motor control, battery management, energy measurement, and embedded electronics applications.

What's in the box
1 x BDD ACS712 20A Current Sensor Module DC AC Current Measurement Board