The energy and power display has eight digits with an adjustable scale factor and decimal point position, to allow for the accurate display of energy levels from hundredths of a watthour to 100,000 megawatt-hours and power levels from tenths of a watt to megawatts. By
adjusting the scale factor and decimal point position, you can display energy in watt-hours,kilowatt-hours, or megawatt-hours and power in watts, kilowatts, or megawatts. The energy and power display is self-powered for use with the Advanced Pulse WattNode models with
an output frequency up to 20Hz. For Advanced Pulse WattNode models with an output frequency greater than 20Hz an external DC power supply and pull-up resistor are required. The long life battery maintains the total energy value, even if power to the WattNode fails.