Our E2 Classic energy monitor is simple to install and easy to use. 3 mini current sensors are clipped to the incoming supply cables (3 phases). Leads from the sensors are plugged into the transmitter. The display shows the combined 3 phase power consumption. The monitor receives the data and displays the demand in kilowatts of energy being consumed at any given time. The E2 Classic may be programmed for various rates, ensuring that the cost of your energy is accurate. The E2 Classic works in conjunction with your energy management software elink, which allows you to look at in-depth energy information on your computer.