ACS712 Current Sensor 5A, 20A

ACS712 Hall Effect Current Sensor Module (5A & 20A Variants – ACS712ELCTR Series)

Measure AC and DC current safely and accurately with the ACS712 Current Sensor Module. This Hall-effect based sensor provides electrical isolation between the measured circuit and your microcontroller, making it ideal for power monitoring, protection systems, and smart energy projects.

Available in 5A and 20A versions, this module allows you to choose the right current range depending on your application needs.

Key Features:

Hall-effect current sensing with electrical isolation
Measures both AC and DC current
Available in 5A and 20A variants
Analog voltage output proportional to current
Stable 5V operation for easy microcontroller integration
Low internal resistance for minimal power loss
Compatible with Arduino, ESP8266, ESP32, STM32, and more

Specifications:

ACS712-5A:

Measurement Range: ±5A
Sensitivity: ~185 mV/A

ACS712-20A:

Measurement Range: ±20A
Sensitivity: ~100 mV/A

Common Specs:

Operating Voltage: 5V DC
Output Type: Analog (centered at VCC/2 at 0A)
Bandwidth: ~80 kHz
Isolation Voltage: ~2.1 kVrms
Response Time: ~5 µs

Perfect For:

Battery monitoring systems
Solar and power management projects
Overcurrent protection circuits
Arduino and IoT energy monitoring
Motor and load current measurement

Whether you're building a smart energy system or monitoring power consumption in real time, the ACS712 module provides a simple and reliable solution for current sensing.