Features Unidirectional measurement of single-phase two-wire active power consumption. This is not the case with the direction of charging current flows. Conforms to IEC 62053-21 Can select the display of 5+1LCD digits (99999.1kWh). Standard configuration short terminal cover, can select the extension terminal cover, so as to protect for safe use. Installation on standard 35 mm DIN rail according to DIN EN50022. 6 pole width (12.5 mm module), complies with J B/T7121-1993 standard. Standard configuration short terminal cover, can select the extension terminal cover, so as to protect for safe use. Features: Model: XTM75S-U Accuracy: Class 1 Voltage: 220 V. Current: 5(30)A, 15(60)A, 20(80)A (optional) Insulation performance: 4kv AC voltage for 1minute, waveform pulse voltage 1.2/50us 6kv Size: 10 x 7.5 cm/3.94 x 2.99 inches. Weight: approx. 270-277g Features: Unidirectional measurement of single-phase two-wire active power consumption. This is not the case with the direction of charging current flows. Conforms to IEC 62053-21. Installation on standard 35 mm DIN rail, conforms to DIN EN50022. Width 6 poles (12.5 mm module), complies with standard J B/T7121-1993. Can select the display of numbers 5 + 1LCD (99999.1k). Standard configuration. one output port Passive pulse (polarity), can select increase a passive pulse output remote port (not polarity), conforming to IEC 62053-31Standard configuration does not detect the direction of load current flows. Can select the automatic detection of the direction of charging current flows. And instructions by an individual LED. Cover short terminals of standard configuration, can select the cover of extension terminals, in order to protect for safe use. Package includes: 1 x DIN Rail Electric Meter 1 x Manual Package List