AC Current Sensor

The Modern Device AC current sensor is an absolutely unique, easy-to-use, electrically isolated current sensor for AC mains voltages (120/240 volts AC). Just zip-tie the sensor to a power cord, and safely read the current proportional to the DC output. The sensor only has three connections 3.3 or 5 volts, GND and the linear voltage output that goes directly into a microcontroller ADC (analog pin).   With the sensor being entirely isolated from the AC line cord, the Modern Device Current Sensor is a safe and easy way to sense current with an Arduino or other microcontroller with no fuss. The current sensor can distinguish as little as 2 watt loads at 120 volts, which means that it can sense a change in current of AC current of about 16 mA. The output is just an analog voltage which is proportional to the current sensed. If you are looking for absolute values of current you will need to do a little calibration: this is as easy as applying two loads, hopefully a light load and a much heav