Power Meter LED Display Mounting Surface Input Voltage 20 to 721V AC Delta 46 to 416V AC Wye Amps 1 A +/-0.20 Percent Accuracy Measures Amps Energy Volts Enclosure Rating NEMA 12 Hz 60 Meter Range 20 to 721V AC Delta 46 to 416V AC Wye Phase 3 Operating Temp Range -4 Degrees to 158 Degrees F Height 7.6 in Width 7.9 in Depth 3.2 in