This device is a panel mount or flush mount power meter with a 96mm by 96mm bezel size having 3 rows of bright red 4 digits 14.2 mm height LED display.::The meter measures active energy as per accuracy class Class 1.0 complying to IEC 62053- 21 standard with sampling rate of 64 samples per cycle.::Able to measures all three vectors of power and energy such as Active, Apparent & Reactive beside Voltages, Current, Frequency and Power Factor.::Plus the total Harmonic Distortion and Individual harmonics up to 15th Harmonic order.::The meter will function in either 50Hz or 60Hz network frequency and accepts universal control power voltages ranging from 44 to 300 V Line to Neutral AC or DC voltages.::Rated current for this meter is either 1A or 5A input.::it supports up to 13 different types of wiring schemes under Single Phase,Two Phase or Three Phase configuration types.::The range of measurement voltage between Phases is 35 to 480 V Line to Line AC at 45 to 65 Hz while it is 20 to 277 V between Line and Neutral.::It is having RS485 communication port over Modbus RTU protocol.::Product dimensions are as follows: width 3.78 in (96 mm), depth 2.16 in (54 mm), height 3.78 in (96 mm) and product weight 10.58 oz (300 g).