You can use this module directly with Arduino to measure the current and power of a load, typically a lamp, heater or power distribution of an electrical system. This module utilizes an ACS712 Hall-effect-based linear current sensor to measure current using the Hall Effect principle.

ACS712 current sensor can measure current AC or DC ranging from +20A to -20A. You have to select the right range for your project since you have to trade off accuracy for higher-range modules. This module outputs Analog voltage (0-5V) based on the current flowing through the wire; hence it is very easy to interface this module with any microcontroller. So if you are looking for a module to measure current using a microcontroller for your project then this module might be the right choice for you.

Note: When there is no current passing through this module, the output voltage would be at a centre voltage of 2.5V.

SPECIFICATIONS

• Operating voltage: 5V only
• Sensing current: 20A (depending on model)
• Intrusive current sensing method
• Output voltage : 0 – 5V
• Output voltage proportional to AC or DC currents
• Extremely stable output offset voltage
• Nearly zero magnetic hysteresis
• Dimension : 32 x 14 x 10 mm

PINOUT

DOCUMENT

• Datasheet 
• Tutorial

SHIPPING LIST

• 1 x ACS712 20A Hall Current Sensor