ACS712 / ACS724 Hall Effect Current Sensor Module

The ACS712 / ACS724 Current Detection Board is a compact, reliable Hall Effect-based current sensing module designed for makers, engineers, and electronics enthusiasts. Supporting measurement ranges of 5A, 20A, and 30A, this versatile module lets you accurately monitor both AC and DC current in your projects — from Arduino builds and robotics to home automation systems and power monitoring circuits.

Key Features

Wide measurement range: Available in 5A, 20A, and 30A variants to suit a variety of applications
Bidirectional current sensing: Measures both positive and negative current flow (e.g. ±30A for the 30A version)
Analog voltage output: Clean, proportional analog output — 66 mV/A sensitivity on the 30A version, 100 mV/A on the 20A version, and 185 mV/A on the 5A version
5V supply voltage: Simple single-supply operation; onboard power indicator LED for easy status confirmation
Isolated measurement path: No direct electrical connection between the current path and the signal output, improving safety and circuit isolation
Compact PCB design: Small form factor (approx. 31mm) fits neatly into enclosures and breadboard setups
Plug-and-play ready: Standard pin headers for easy integration with microcontrollers such as Arduino, ESP32, and Raspberry Pi
3 color/variant options: Choose the range that best suits your project requirements

Specifications

Compatible ICs: ACS712, ACS724
Current Ranges: 5A / 20A / 30A
Operating Voltage: 5V DC
Output Type: Analog voltage
Sensitivity: 185 mV/A (5A) | 100 mV/A (20A) | 66 mV/A (30A)
Onboard: Power indicator LED

Ideal Applications

Arduino / microcontroller current monitoring projects
Solar panel and battery current sensing
Motor current feedback control
Smart home energy monitoring
DIY power supply testing

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Frequently Asked Questions

Q: What does the ACS712 / ACS724 current sensor module do?

A: The ACS712 / ACS724 Hall Effect current sensor module detects and measures electrical current flowing through a conductor. It outputs a proportional analog voltage signal that a microcontroller (such as an Arduino) can read to determine how much current is flowing — in either direction. It supports AC and DC current measurement within its rated range (5A, 20A, or 30A depending on the variant).

Q: Which current range should I choose — 5A, 20A, or 30A?

A: Choose the range that best matches the maximum current you expect in your circuit. The 5A module offers the highest sensitivity (185 mV/A) and is great for low-power devices. The 20A module (100 mV/A) suits mid-range applications like motors. The 30A module (66 mV/A) is ideal for high-current loads such as solar panels or large motors. Always select a range slightly above your expected maximum current for safe, accurate readings.

Q: Is this module compatible with Arduino and other microcontrollers?

A: Yes! The ACS712 / ACS724 module operates on 5V and outputs a standard analog voltage signal, making it fully compatible with Arduino, ESP8266, ESP32, Raspberry Pi (via an ADC), and virtually any microcontroller with an analog input pin. Simply connect VCC to 5V, GND to ground, and read the OUT pin with your analog input.

Q: Does this module measure both AC and DC current?

A: Yes, the ACS712 and ACS724 Hall Effect sensor ICs can measure both AC and DC current. For AC measurements, you will need to apply RMS calculation in your code to get an accurate reading of the effective current value.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.