The WattNode® for BACnet® (MS/TP) is a multi-function electric kilowatt-hour (kWh) energy and power meter that communicates on a EIA RS-485 network, measures 1, 2, or 3 phases with voltages from 120 to 600 Vac and currents from 5 to 6,000 amps in delta (phase to phase) and wye (phase to neutral) configurations.