ACS712 Hall-Effect Current Sensor Module

The ACS712 measures current flowing through its screw terminals and outputs a proportional analog voltage centred at VCC/2, so it reads both directions of DC as well as AC. The Hall-effect principle keeps the measured circuit electrically isolated from your microcontroller. Use it to monitor solar charging, battery drain, motor load or appliance consumption.

Key features

• AC and DC current, both directions
• Galvanic isolation between load and logic
• Analog output centred at 2.5 V
• Three ranges: ±5 A (185 mV/A), ±20 A (100 mV/A), ±30 A (66 mV/A)

Specifications

What's in the box

• 1 × ACS712 module (range as selected)

Ideal for

• Solar and battery monitoring
• Motor overload detection
• Energy meters

Good to know

• For mains AC measurements, work only with proper insulation and enclosure.