Here's a picture of the current sensor before I taped it up. It senses a pull of 2 amps, and sends a low voltage to the Powerflash. If you have an appliance that pulls less than two amps, each time you loop the "hot" wire through the sensor it will cut the sensoring by one half. I haven't tried that yet, but that's what my information says.
It works perfectly with my dryer.
