Model: DIN-Rail XTM75S-U electric meter. It has 6 poles in width (12.5 mm module), in accordance with JB/T7121-1993 standards. Can select 5 + 1 digit LCD display (9999.1 kWh). High quality: standard configuration of a passive output port (polarity), can select a remote port of passive output (polarity), in accordance with IEC 62053-31 Advantage: single-phase two-wire unidirectional measurement, active energy consumption. There is nothing with the direction of the load current flow. Conforms to IEC 62053-21. Convenient: Standard 35mm DIN rail installation, conforms to DIN EN50022. Standard configuration does not detect the direction of load current flow. Can select automatic detection of load current flow direction. Instructions provided by individual LED. Safe use: standard short lug configuration, can select extension terminals shell, to protect safe use.