Features 【35mm standard rail installation】: 35mm standard DIN rail installation, conform to DIN EN50022.Six pole width (module 12.5mm), complies with JB/T7121-1993. 【Configuration】: Standard configuration a passive impulsive output port (polarity), can select the increase of a distant port of passive impulsive output (non-polarity), compliant with IEC 62053-31 standard. 【LED indicators】: The standard configuration does not detect the direction of the flow of the load current. You can select automatic detection of the direction of the load current flow. And the instructions are provided by a single LED. 【Advantage】: Measures two-wire single-phase active energy consumption. It has nothing to do with the direction of the flow of the load current. Complies with IEC 62053-21 standard. 【Premium Quality】: Standard configuration of short terminals, can select the cover of extension terminals, in order to protect to use safely. Features: 1.Installation on standard 35 mm DIN rail according to DIN EN50022.Six pole width (module 12.5 mm), meets JB/T7121-1993 standard. 2.Standard configuration one passive pulse output port (polarity), can select increase a distant passive pulse output port (not polarity), comply with IEC 62053-31 standard 3. The standard configuration does not detect the flow direction of the load current. You can select automatic detection of the direction of the load current flow. And instructions from a single LED. 4.Single direction measure single phase two wires active energy consumption. It has nothing to do with the direction of the flow of the load current. Complies with IEC 62053-21 standard. 5. Standard configuration cover short terminals, can select the coverage of extension terminals, in order to protect to use safely. Specifications: Model No.: XTM75S-U Accuracy: Class 1 Voltage: 220V Current: 5(30)A, 15(60)A, 20(80)A (optional) Insulation performance: AC voltage 4kv for 1 minute, waveform impulse voltage 1.2/50us 6kv Dimensions: 10 x 7.5 cm / 3.94 x 2.99 inches Weight: About 270-278g Package Included: 1 x DIN rail electric meter 1 x Manual Package List