This device is a universal meter for panel mounting with a size of 96 mm x 96 mm and a backlit LCD display with 128 x 128 pixels. The universal meter measures active energy according to IEC 62053-21 Class 1.0 accuracy with a sampling rate of 64 samples per cycle. Can measure all three power and energy values such as active, apparent and reactive power as well as voltages, currents, frequency and power factor. Plus total harmonic distortion and individual harmonics up to the 15th order. The universal meter operates with either a mains frequency of 50Hz or 60Hz and accepts universal control voltages from 44 to 300 V between phase and neutral, AC or DC. The rated current for this meter is either 1 A or 5 A at the power input. It supports up to 13 different types of wiring schemes under single-phase, two-phase or three-phase configuration types. The measuring voltage range between phases is 35 to 480 V AC from phase to phase at 45 to 65 Hz, while the range between phase and neutral is 20 to 277 V. It has an RS485 communication port with Modbus RTU protocol. The product dimensions are as follows: width 96 mm, depth 54 mm, height 96 mm and product weight 300 g.