Power Meter, LCD Display, Mounting Flush, Input Voltage 120/480V AC, 125/250V DC, Amps 1 A, 5 A, +/-0.50 Percent Accuracy, Measures Current, Data Logging, Energy, Frequency, Harmonics, Power, Voltage, Enclosure Rating Not Enclosed, Hz 50/60, Meter Range 20 to 690V, Phase 3, Operating Temp. Range -25 Degrees to 70 Degrees C, Height 3.78 in, Width 3.78 in, Depth 2.83 in, Standards ANSI C12.20 Class 0.2, Modbus